How fast is a 400ex

Honda 400ex In-Depth Guide The Honda 400EX is a 375lb all-terrain vehicle(ATV) manufactured by Honda Motors Company from 1999 until 2009. It has a 28 horsepower engine and the Honda 400EX has a top speed of 72 MPH. The 400EX also sports a sturdy steel frame with removable sub-frame and exceptionally rigid cast aluminum swing-arms. Triple disc brakes provide much needed stopping power and an ...

Jan 13, 2021 · Is Honda 400ex fast? Well a stock Blaster runs around 55mph, and a stock 400ex should run close to 65mph. In a drag the Blaster should keep pace up until the Honda hits higher gears and should pull away. By your sig your Honda is running stock gearing, and has a big bore kit. How fast is a Honda 400ex in mph? Keeping the squish clearance down to .040 gives a better quench area around the outside of the piston keeping it cool and less chance for detonation. You will be able to run an 11:1 motor on pump gas in most cases and have a more efficient flame travel and quicker burn rate across the top of the piston.May 15, 2014 · The only thing that will make a 400ex unreliable is a 440 kit done cheaply. If you're going as far as putting a xr400 head gasket in you might as well do a Higher compression piston or even bore it. It is well worth it. Go with a 11:1 87mm (416) and a stage 1 or 2 hotcam. Oh and get yourself a UNI filter. I have an 04' 400ex with a Lexx exhaust and K&N air filter and a set of maxxis Rzr's and i topped my quad out next to my friends bruteforce at exactly 50mph, i …Feb 20, 2020 · How fast is a 400ex with a big bore kit? Well a stock Blaster runs around 55mph, and a stock 400ex should run close to 65mph. In a drag the Blaster should keep pace up until the Honda hits higher gears and should pull away. How fast is a Honda 400EX 4 wheeler? Thanks to RFVC (Radial Four-Valve Combustion Chamber) and an XR400R-adopted power mill, the 2004 Honda 400EX supports a top speed of 72 mph (116 km/h) and a horsepower of 28 RWHP (20.59 kW). What colors did the 400EX come in? 2004 Honda Sportrax 400EX Specifications. Model …How fast will a 2007 Honda trx 400ex go? mine is basically stock and tops out at 70 mph. Does 400ex have reverse? only on the 2005 and newer. not the 1999-2004.

Jan 15, 2010 · officialvin. Posted January 15, 2010. Hey all, I have a 01 400ex, i have a fmf ex. air box is cut, has a hotcam. was bored out a little then i blew it up and toasted the jug. I just bought the 440 kit and am looking for a base to start at with jets.. I have looked and cannot find anything useful.. It has a bore-stroke ratio of 86 mm x 68 mm. The engine displacement is 395 cubic centimeters (24.1 cubic inches) delivered by a 32-mm vacuum piston Honda Foreman 400 carburetor, and its compression ratio is 8.2:1. It has a forced pressure and wet sump type lubrication system with an oiled double Urethane air filtration. here is a few pistons that i am considering, also does it really add the 4-6 hp they say or is that when the bike is all modded, cam, exhaust, intake etc thanks for any help in advance. 99-08 Honda 400EX WISECO 10:1 .120 426 PISTON TRX400EX | eBay. Wiseco Piston Kit Honda TRX400EX XR400R 11:1 .080 (416) | eBay. Ride anything.Like. stu5969 · #3 · Jan 10, 2014. Well a stock Blaster runs around 55mph, and a stock 400ex should run close to 65mph. In a drag the Blaster should keep pace up …Experimenting with new camera and a new microphone. Also some weird 22 inch tires. #savesportquads #trailriding #400exQ. How fast does a Honda 400ex go? The Honda 400ex’s top speed is nearly 72 mph. Q. What is the seat height of the Honda 400ex? It has a seat height of …Features of TRX400EX. 1. Compatible with 1999-2004 TRX400EX TRX 400EX 2. Three Pin Connector 3. Package Include: 1x Ignition Key Switch, 2x Keys 4. Replaces these part numbers: Compatible with 5100-HN1-000. 1. Compatible with 1999-2004 TRX400EX TRX 400EX. The TRX 400EX is a top-of-the line and affordable entry …

Oct 28, 2020 · Honda 400EX the Yamaha Raptor 660R and Bombardier’s DS 650. The acceleration is so good on the Raptor that it outpulls the 400EX easily and stays ahead of the DS on fast, winding trails. Here the DS’s extra girth, width, and length hinder its performance. Most riders should spend more time training than worrying about how fast their motor is. So to answer your question, on the motor making everything match will be number 1 priority. A 416cc motor with a good mid-range cam would be a good start. ... I have a 2001 400ex with a T4 slip-on K&N jet kit 14 tooth front sprocket. I use the bike to race ...I have a 03 400ex and was wondering if it OK to shift without the clutch. Only up tho, like 1-2, 2-3, 3-4, 4-5. Is this OK?Because when you are going fast, and you need to shift, when you bring in the clutch you hear is rev.Like. stu5969 · #3 · Jan 10, 2014. Well a stock Blaster runs around 55mph, and a stock 400ex should run close to 65mph. In a drag the Blaster should keep pace up …Feb 4, 2023 · 1. How fast can a TRX450r go? 2. How fast does a Honda 400EX go? 3. How much HP does a Honda 450R make? 4. Did Honda stop making 450R? 5. What is the difference between 400ex and 450R? 6. How much does a TRX 450R cost? 7. How much is a 400EX worth? 8. How fast is a 400 quad? 9. Is 400EX a race quad? 10. Which 450 has the most horsepower? 11. Honda 400EX Top Speed: 72 MPH; Length : 72.2 inches; Width : 45.3 inches; Height : 43.7 inches; Wheelbase : 48.4 inches; Honda 400EX Horsepower: 28 HP; Honda 400ex Seat Height : 31.9 inches; …

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My buddies 04 will go a little faster than mine due to different gearing. The do not go faster unless you do things to the gearing, tire size or increase your RPM. ... Honda replaced the 400EX in 2009 with the TRX400X. What is the fastest stock ATV? Polaris Scrambler XP 1000S. Can Am Renegade X XC 1000R. Arctic Cat Thundercat 1000. Can …But put both machines on a fast, whooped-out trail and the DS would walk away from the Honda. ENTER THE RAPTOR. Now there is a new challenger to both the mighty DS650 and Honda’s newly renamed 2001 model Sportrax 400EX. The Yamaha 660R Raptor is the latest wonder quad to debut in the big bore high-performance wars. ...A Honda 400EX from 2004 is how fast? The Sportrax TRX400EX is powered by a 397-cm3 (24.23 in3) RFVC air-cooled single-cylinder 4-stroke engine with a bore-stroke ratio of 8570 mm (3.352.76 inches). The air-fuel mixture is managed via a 38-mm piston valve that couples to a 9.1:1 compression ratio and dry-sump lubrication. Feb 4, 2023 · 1. How fast can a TRX450r go? 2. How fast does a Honda 400EX go? 3. How much HP does a Honda 450R make? 4. Did Honda stop making 450R? 5. What is the difference between 400ex and 450R? 6. How much does a TRX 450R cost? 7. How much is a 400EX worth? 8. How fast is a 400 quad? 9. Is 400EX a race quad? 10. Which 450 has the most horsepower? 11. Dimensions. The 400EX spanned a length of 72.2 inches, with a wheelbase of 48.4 inches and an overall width of 45.3 inches. The seat sat 31.9 inches above the ground, and at its lowest point, the steel tube chassis had a ground clearance of 4.3 inches. The 400EX could hold a driver and a passenger. It had a curb weight of 410 pounds when the 2. ...400ex-unkillable so long as you change the oil even infrequently-simple and easy to work on-air cooled-hasnt changed besides the plastics in eons. 99-04 are all the same engine, 05+ engine includes a reverse gear-Plentiful parts-Will happily do well going slow or fast-With a cam, a pipe, open airbox really wakes it up-experienced rider will be ...

How fast is it? Honda 400EX first ride after selling our Suzuki 230LT. "Wow!, is it FAST! Chain noise on rear skid plate, we fixed that right after this rid...To determine the final drive ratio, divide the rear sprocket size, say 49 teeth, by the front or countershaft sprocket size, say 13 teeth (like a new Yamaha YZ250F ). In this case, the Final Drive Ratio is 3.77 - the front sprocket revolves 3.77 times to make one complete revolution of the rear sprocket. The final drive ratio on a motocross ...How fast will a 2007 Honda trx 400ex go? mine is basically stock and tops out at 70 mph. Does 400ex have reverse? only on the 2005 and newer. not the 1999-2004.How fast is a 400 quad? Top Speeds. A stock 400ex should run around 106 ” 112 Km/h. It might take a stocker a little while to get there, but that’s about what they run. Is a Honda 400 EX fast? It has a 28 horsepower engine and the Honda 400EX has a top speed of 72 MPH. The motor has dual intake and dual exhaust ports for maximum engine ...It depends on what model. But the 2004 400ex can go as fast as 70-75mph.It will only help in acceleration unless you change the gearing. Reply. Save. 9. 96warrior · #3 · Feb 5, 2003. It will go in the mid to high 60's. I think there actually fairly quick stock. Those bolt ons will only make it better! If it isn't fast enough for you (top speed) go up one tooth on the counter shaft sprocket.400ex-unkillable so long as you change the oil even infrequently-simple and easy to work on-air cooled-hasnt changed besides the plastics in eons. 99-04 are all the same engine, 05+ engine includes a reverse gear-Plentiful parts-Will happily do well going slow or fast-With a cam, a pipe, open airbox really wakes it up-experienced rider will be ...Jan 10, 2014 · stu5969 · #3 · Jan 10, 2014. Well a stock Blaster runs around 55mph, and a stock 400ex should run close to 65mph. In a drag the Blaster should keep pace up until the Honda hits higher gears and should pull away. By your sig your Honda is running stock gearing, and has a big bore kit. So with the mods on the Honda it should be a runaway. D. daddogrider · #21 · Sep 2, 2003. our white YFZ 450 goes 35 mph up chokecherry hill with one rider, 28 mph with two riders and 24 mph with three riders. the fastest bike is an 800 cc snowmobile engine on NOS that can go 67 MPH up chokecherry. the highly tricked Banshees on alcohol can go 42 to 45 MPH.

I take my 1999 Honda 400ex for a trail ride and then test compression. We need to figure out why it is smoking. #Honda, #400cc, #SmokeyGirl, Check out Acupun...

Pricing and Which One to Buy. 2022 Honda TRX250X MSRP: $5,199. Only one trim level is offered but it’s available in three colors to choose from: red/black, Reactor Blue, or Magenta.The 400ex is very reliable all around, handles good and you can find them for about 4000 in good shape. The only thing I don’t like about them is the lack of reverse. The warrior is all right, my old warrior didn’t handle or shift very well and small parts liked to break on it often.1 - 10 of 10 Posts. 400exrider15 · #2 · Oct 14, 2010. 14 front 39 rear for 05 and up. 15 front 38 rear is 99 to 04. I upgraded to the stock 05 and up gearing on my 04 400ex. i needed a bit more bottom end. If you bump that front up, its equal to 2 rear teeth. just remember that.... 2004 Honda 400ex, too many mods to list.I take my 1999 Honda 400ex for a trail ride and then test compression. We need to figure out why it is smoking. #Honda, #400cc, #SmokeyGirl, Check out Acupun...The 400EX provided an affordable platform, which could be transformed from a mild-mannered recreation machine to an incredible raging beast for its day. It has been nine years since the first TRX400EX was unveiled, and unlike the short four-year life span of its 250R predecessor, the 400EX continues to evolve, appearing to be here to stay for at …Jan 10, 2014 · stu5969 · #3 · Jan 10, 2014. Well a stock Blaster runs around 55mph, and a stock 400ex should run close to 65mph. In a drag the Blaster should keep pace up until the Honda hits higher gears and should pull away. By your sig your Honda is running stock gearing, and has a big bore kit. So with the mods on the Honda it should be a runaway. I take the first ride on my 1999 Honda 400ex since the rebuild.This quad has some power! #400cc, #Honda, #Power, SUBSCRIBE: https://www.youtube.com/channel/U...Honda 400EX Engine and Exhaust Upgrades, How To Make A 400EX TRX450R Fast. CT Racing Engine's Allen Knowles explains what it takes to make the torquey and fu...

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Jan 13, 2021 · Is Honda 400ex fast? Well a stock Blaster runs around 55mph, and a stock 400ex should run close to 65mph. In a drag the Blaster should keep pace up until the Honda hits higher gears and should pull away. By your sig your Honda is running stock gearing, and has a big bore kit. How fast is a Honda 400ex in mph? Having a Honda sportrax 400ex is the best sport ATV you can own. It rides great, up and down hills. It rides in the mud like it owns it, and don't get me started on the gas. ... SO far the fast ...The only thing that will make a 400ex unreliable is a 440 kit done cheaply. If you're going as far as putting a xr400 head gasket in you might as well do a Higher compression piston or even bore it. It is well worth it. Go with a 11:1 87mm (416) and a stage 1 or 2 hotcam. Oh and get yourself a UNI filter.The 400X is responsive and powerful, but it’s much more smooth. The 450R’s power advantage made it faster in easy, open terrain; on big hills; and even on tight, difficult, technical trails—for our pro racer. Most of the time our trail rider was as fast on the 400X as on the 450 because he wasn’t using all the 450’s power.The 400EX had 10 years of advancement in geometry and suspension. The four-stroke motor, too, was a big step forward for the recreational quad rider, mostly …How fast is a Honda 400EX 4 wheeler? Thanks to RFVC (Radial Four-Valve Combustion Chamber) and an XR400R-adopted power mill, the 2004 Honda 400EX supports a top speed of 72 mph (116 km/h) and a horsepower of 28 RWHP (20.59 kW). What colors did the 400EX come in? 2004 Honda Sportrax 400EX Specifications. Model …1 ส.ค. 2561 ... The 400EX is one of the greats, up there with the Yamaha Banshee 350. ... fast delivery, unmatched customer service and industry-leading ...not as much as you might think. i rode a DVX and a 400ex back to back and watched them race last week. the DVX definitely makes more power down low and the power is real crisp. however it isnt much faster thana 400ex. it just creeps by the stock 400 my friend has. they arnt that much faster and personally i like the 400EX over the DVX …Honda’s 400EX—or 400X in this case—has been around since 1999, where we entered it in the Baja 1000 and set a new record for an ATV at 23 hours, 59 minutes and 33 seconds. At the time, it was the most venerable race quad around, but time and technology have relocated the 400X to the trail quad segment. Numerous changes over …The 440 is a great power add but even with the bigger head studs, it will blow the head gasket if ridden hard for any length of time. The greatest way to go in a 400 and make it reliable is to do a 426 and use the fcr carb to get the power you need. It a inexpensive way to give you more power and have reliability.The Honda 400EX top speed is between 65 and 68 mph in a fully stock machine. However, plenty of owners have made modifications to their ATV in order to increase the top speed to 75+ mph and keep up with the Yamaha Raptor 700’s and Polaris Scrambler XP 1000’s of the ATV world.This is a safety feature meant to keep people from going too fast and hurting themselves. A lot of times you can take the limiters off the machine, but this post is all about no modifications. Lets take a closer look at each quad. ... Honda TRX 400EX; Yamahe Banshee 350; Suzuki LT R450; ….

1999-2002 Honda TRX400EX Specs. Manufacturer: Honda. Year: 1999, 2000, 2001, 2002. Model: TRX400EX. Model Code: HN1. Frame Starting Number 1999: 478TE230*XA000001the honda 400ex is by far the best atv ever made. not the fastest but also not slow eather i bought my first one in 2002 it ran great then and still does now i changed a few small thing with the ...Insure your 2001 Honda for just $75/year*. #1 insurer: 1 out of 3 insured riders choose Progressive. Savings: We offer plenty of discounts, and rates start at just $75/year. OEM parts in repairs: We use OEM parts in repairs and don’t depreciate anything.The base price of the 2008 Honda TRX 400EX ATV is $5999. This is $942.86 more expensive than its competition. The Single-Cylinder engine in the 2008 Honda TRX 400EX ATV has a displacement of 397 cc which is 8.31% more than its competition.Jan 17, 2023 · How fast is a 2000 Honda 400EX? It has a 28 horsepower engine and the Honda 400EX has a top speed of 72 MPH. Do they still make 400EX? Honda Discontinuing 400EX and TRX450R models. How much horsepower does a 450r have? This increased the power from about 33 horsepower (25 kW) in the first generation to over 41 horsepower (31 kW) in the second. How fast is a 2001 Honda 400ex? Generally, fresh from the factory, the 400 will do anywhere from 65-70, with most people finding 68 as the average top speed. How fast is a 400 quad? Top Speeds. A stock 400ex should run around 106 ” 112 Km/h. It might take a stocker a little while to get there, but that’s about what they run. Is a Honda 400 ...It will only help in acceleration unless you change the gearing. Reply. Save. 9. 96warrior · #3 · Feb 5, 2003. It will go in the mid to high 60's. I think there actually fairly quick stock. Those bolt ons will only make it better! If it isn't fast enough for you (top speed) go up one tooth on the counter shaft sprocket.28 ต.ค. 2563 ... The Raptor consistently turned in the fastest lap times with the Bombardier and Honda following. When it comes to jumping and turning, the ...Is a Honda 400 EX fast? It has a 28 horsepower engine and the Honda 400EX has a top speed of 72 MPH. The motor has dual intake and dual exhaust ports for maximum engine efficiency. The TRX400EX has a five-speed transmission with Reverse to round out it’s arsenal of go fast. How fast is a 400ex, I have an 04' 400ex with a Lexx exhaust and K&N air filter and a set of maxxis Rzr's and i topped my quad out next to my friends bruteforce at exactly 50mph, i …, How fast is a Honda trx 450r? Approx. 70mph to 75mph is the max. speed of this Honda trx 450r. ... 400ex does 60 tops. How fast does a stock Honda trx 250R go? 70 to 80mph., It will only help in acceleration unless you change the gearing. Reply. Save. 9. 96warrior · #3 · Feb 5, 2003. It will go in the mid to high 60's. I think there actually fairly quick stock. Those bolt ons will only make it better! If it isn't fast enough for you (top speed) go up one tooth on the counter shaft sprocket., Is a 400EX fast? A 400ex won’t come close to 80mph unless you change the gearing drastically. The top speed of a stock 400ex will be between 65 and 70. Is a TRX 450R a kick start? The TRX 450R was released in 2004 as a kick-start only, high performance four stroke replacement for the age-old TRX 250R two stroke. , This one is a typing test that expresses your typing skills in words per minute. The more you practice typing, and the more you test your typing speed, the higher your WPM score will be. Some online typing tests and typing test games focus only on WPM typing. The disadvantage of the WPM typing test is that you are only learning how to type fast., Since one of the best things about the 430EX II are its ultra-fast recycling, I wouldn't bother with the original 430EX unless you prefer a real switch to get into slave mode. 420EX (2000-2005) The older Canon 420EX has essentially the same size, wireless ability, zoom range, power and features of the original 430EX (which is pretty much the same as the 430EX II)., The 400EX had 10 years of advancement in geometry and suspension. The four-stroke motor, too, was a big step forward for the recreational quad rider, mostly …, 22 ก.ค. 2561 ... Honda 400EX Hits 70mph · Comments97., But the 2004 400ex can go as fast as 70-75mph. How fast can a 2000 HONDA 400ex ATV go? 87 mph. How fast does a 1999 Honda 400ex go? 54 to 58mph (in stock), The 2004 Honda 400EX supports a top speed of 72 mph (116 km/h) and a horsepower of 28 RWHP thanks to RFVC (Radial Four-Valve Combustion Chamber) and an XR400R …, The 397cc XR400 engine has been around for a long time (it’s also used in the popular 400EX sport-quad from Honda), so it’s a proven motor for riding off-road. It’s not high performance, and it’s definitely not a new technology – rocker arm valvetrain. ... You can adjust the compression on the bottom of the fork legs, which controls how fast they …, Thanks to RFVC (Radial Four-Valve Combustion Chamber) and an XR400R-adopted power mill, the 2004 Honda 400EX supports a top speed of 72 mph (116 km/h) and a horsepower of 28 RWHP (20.59 kW). Some find the machine’s low-end torque lacking, but changing ratios to 14/38, 15/39, or 14/39 and adding a Dynatech CDI box would give you the pull you need., 1 - 17 of 17 Posts. Josh · #2 · Apr 12, 2012. you can never get bored with a sport quad unless you like to go mudding then your sol. a 400ex will do 80+ mph i know 70 mph is around 125 km/h so its faster. as long as you have some jumps and places to go fast and kick the rear end out wide then you will have fun., Back to the Honda TRX450R. Since its inception in 2004, the TRX has sold very well. The iconic TRX250R sold similarly well in the 80s. To this day, the Honda 450 stands on top of podiums around the world with a steel frame and carbureted engine. Its competition is the Yamaha YFZ450R that is fuel-injected and has an aluminum/steel …, 17 ก.พ. 2557 ... The stock 400EX shocks went on eBay and were replaced by Elka's Stage 5 shocks. The top of the line Stage 5s offer high and low speed ..., I have a modded z400 that goes 70 and i beat a 400ex(stock) by like ten lengths so probly around 60. ... Honda 400ex stock how fast does it go? Wiki User. ∙ 2009-08-29 23:10:34. Study now., Four Stroke Tech's Mickey Dunlap Honda 400EX Peformance Tips. Welcome to the first edition of "ask Mickey Dunlap".. ... Most riders should spend more time training than worrying about how fast their motor is. So to answer your question, on the motor making everything match will be number 1 priority. A 416cc motor with a good mid-range cam …, Keeping the squish clearance down to .040 gives a better quench area around the outside of the piston keeping it cool and less chance for detonation. You will be able to run an 11:1 motor on pump gas in most cases and have a more efficient flame travel and quicker burn rate across the top of the piston., How fast does a Honda trx 400ex go? 400ex does 60 tops. Where can you purchase a Honda 400ex? A person can purchase a Honda 400ex at any ATV retailer that carries them. An ATV retailer can also order one for you to be delivered to the store. There are also several websites that have a Honda 400ex., I think my 400ex since I put the 416 kit and cam in would hang with my old polaris. But a piped 400ex wouldn't have a chance against a mildy modded 400 sport..I don't think I ever reached top speed on mine either,,I'd get on long roads open it up,,and it felt like it never quit pullin..:eek:, I want to put a Big bore in my 400ex. I have a full exhaust, 450 carb, and K&N filter with outerwears and no airbox lid. Im pretty sure those are the main mods beside a cam you want for a big bore. I dont want to put the 440 kit in, i want to do the 426. I have done some research, its the last reliable bore before i need to Re-sleeve, with 11:1 ..., Honda 400EX Top Speed: 72 MPH; Length : 72.2 inches; Width : 45.3 inches; Height : 43.7 inches; Wheelbase : 48.4 inches; Honda 400EX Horsepower: 28 HP; Honda 400ex Seat Height : 31.9 inches; …, The base price of the 2008 Honda TRX 400EX ATV is $5999. This is $942.86 more expensive than its competition. The Single-Cylinder engine in the 2008 Honda TRX 400EX ATV has a displacement of 397 cc which is 8.31% more than its competition., Today I went out and saw how fast the quad can go!.Subscribe Insta : Cash Skarda$, I just recently purchased one and they are pretty fast machines. ... How fast is the 2002 400ex? Wiki User. ∙ 2012-03-23 04:17:40. Study now. See answer (1) Best Answer. Copy., Having a Honda sportrax 400ex is the best sport ATV you can own. It rides great, up and down hills. It rides in the mud like it owns it, and don't get me started on the gas. ... SO far the fast ..., whatever guys, its just the top speed. whats most important is how fast it can get up to that top speed :D i think they just changed the name of the 400s from sportrax to trx cuz they want to keep the same name as the 450r. sportrax 450r sounds wierd. trx 450r sounds better., Ok that's what I want.....does this cam make your sound louder also will this make my bike run hot. 2000 Honda trx 400Ex. (Diamond) 11.1 Namura high compression piston. Bored .20 over. Stage 2 Hot Cam. Itp holeshot tires front and rear. After market hand guards. After market exhaust and header., Jan 10, 2021 · Honda TRX 450r In-Depth Guide Introducing in the red corner, the Honda TRX 450R is a 39 horsepower sport class all-terrain vehicle(ATV) manufactured by Honda Motors Co. It weighs 350 pounds and has a top speed of 74MPH in stock condition. Specs include a 4-stroke liquid cooled 450cc engine, a seat height of 32.8 inches and enough performance parts to make owners happy. Not bad for an ATV with ... , A Honda 400EX from 2004 is how fast? The Sportrax TRX400EX is powered by a 397-cm3 (24.23 in3) RFVC air-cooled single-cylinder 4-stroke engine with a bore-stroke ratio of 8570 mm (3.352.76 inches). The air-fuel mixture is managed via a 38-mm piston valve that couples to a 9.1:1 compression ratio and dry-sump lubrication., Oct 22, 2012 · I want to put a Big bore in my 400ex. I have a full exhaust, 450 carb, and K&N filter with outerwears and no airbox lid. Im pretty sure those are the main mods beside a cam you want for a big bore. I dont want to put the 440 kit in, i want to do the 426. I have done some research, its the last reliable bore before i need to Re-sleeve, with 11:1 ... , This can be changed by following these few simple steps. Step 1: First, you need a new piston and camshaft. Hotcams make good camshafts for the Honda 400ex. When choosing the piston be careful not to get to high of a compression or you will need to use race fuel. This will give you a huge power increase but it is not cheap or very …, How Fast Is A Trx450R. Table of Contents. How much HP does a TRX450R have? What year was the fastest TRX450R? ... How fast is a Honda 400EX? Did Honda stop making 450R? How much does a TRX450R frame weight? Is a 450R fast? What is the fastest four wheeler? How fast does a Honda 450cc go? How many gears does a Honda 450R …