The new CRF250R’s are fuel injected and a complete new engine. Travis at Thumper got one to 280cc with a big bore and a stroker version out to 300. We did the 264cc version here. Tested one day at racetown and one at Piru and had about eight different test riders all love each of
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2010 CRF450R for PU
Parts Unlimited magazine got to test the best mods on a current CRF450R– Hot Cam and high comp piston. Josh Brown for testing riding and Kenny Jones shooting the pics. Came out great!
MXA Project YZF450
Tom Morgan at Hot Cams came up with great cams and mapping to put this mod on top of MXA’s mini-test a few months back!
Got it this time
Last minute Hot Cams got Kiniry to fly out from New York state and give it a shot and see the Racer X project bike through.
Johnny gave it a great shot!
He came up short the Sunday before the National on a section they ended up taking out for the race. Bummer deal—
FMX Best Whip Champion Honda CRF450R Race Bike
We tried for the last national but go hurt so had to go Johnny Jeldera.
Pivot Works Watertight Wheel Collars
These come in the already proven wheel bearing kits and have an o-ring on the inside diameter of the spacer so that no water gets in to the axle/bearings.
Honda’s Proven TRX 450R with a Cylinder Works Complete Big Bore Kit
A simple drop-in kit that really works!!! Combined with a Hot Cam and FMF pipe.
TWMX project by CV4, FMF, Hot Cams and CP
Last year we went for the 470 big bore but this year we kept it stock bore and hit a homer with this full CV4 mod.
FMF Got A New FI Harley For Project Bike!
CP made the Custom pistons, Race Tech took care of the suspension and Bennetts Performance put it all together. FMF made custom pipes with self tuning Dynojet power Commander. Will be in Cycle World shortly.
Simply Drop-In 269cc Kit
Here is a picture of the Cylinder Works 269cc kit that works on all 2001-2011 YZ/WR 250’s. This is the best mod for your money on a YZ/WR 250. Only $599.95 Cylinder, piston kit and gaskets!
Cylinder Works and Hot Rods 284cc kit for the YZF 250
Fits all current YZF250’s and either the cylinder big bore kit alone at 269cc or stroker to go to 284cc — This one was for Moto USA
Fast Core Mods CRF469cc
Transworld Motocross just tested the latest beast I created. Fast Core Mods did the head Work, Millennium the big bore cylinder and CP the high compression piston.
Thumper WR250X Big Bore
280cc big bore with a CP Piston, FMF Pipe, Millennium Cylinder plating and Thumper put it all together for Cycle World.
Thumper Racing Knows BIG with the KTM 600
Brian at SRC worked with Thumper Racing to make the fastest thing we have ever riden. Josh in his Fox gear is a Quad pro now!
2010 CRF250R Big Bore into 264cc
Stock is 76.8mm and big bore is out to 79mm making it 264cc and the results are great! Big power gains for low cost in the new CRF250R with no fuel mapping changes.
Dirt Wheels 400 EX into 417cc Bolt on Mods
The Honda 400 motor is proven but can just use a bit of a boost from a cam and piston. Hot Cams and CP took care of that with a FMF pipe.
Dunlop Tire Change 2010 YZF450 with Jay Clark
Check out this cool Motorcycle USA tire change video we just did during shootouts. http://www.motorcycle-usa.com/708/Motorcycle-Video/Dunlop-Tire-Changing-Guide.aspx We had a great time making it and I hope you find it useful.
Dirt Bike YZ284cc Vertex and Cylinder Works
Adam Booth from Dirt Bike came out to C&L in Iowa to see the plant and ride the Tom Morgan modified 2010 YZ250 into a 284cc
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