Browsing tag

big-bore

FOLLOW-UP HOP-UP! MXA REVISITS THE CYLINDER WORKS HONDA CRF270 TOP GET MORE OUT OF IT

Perhaps you recall our test of the Cylinder Works big-bore Honda CRF270 we tested in the May issue. To summarize, the bike was a blast. The big-bore kit catered to a wide range of riders, but we felt that it could be improved. Following the compl etion of our test cycle we discussed our thoughts of the CRF270 with Cylinder Works rep Jay Clark. Jay said, “If you liked that setup, you’ll love what I have in store for you next.” A few weeks later we met at Glen Helen to re-test the bike. Already quite sati…

WE RIDE CYLINDER WORKS’ BIG-BORE KAWASAKI KX269F

It’s easy to think that Cylinder Works is pandering to cheaters with their line of big-bore engine kits. There is no doubt that cheaters are drawn to what Cylinder Works has to offer, but, in truth, most big-bore engine kits go to riders who are not bound by displacement rules (Vets, play riders and offroad racers). However, there could be just a hint of pandering to cheaters in that you can?t tell a 269cc Cylinder Works cylinder from a stock-bore OEM cylinder. (They even put the same casting numbers on…

TWO-STROKE TEST: MXA BUILDS A YAMAHA YZ144 BIG-BORE MOTOCROSS BIKE

The plight of the Yamaha YZ125 brings a tear to the eye of every MXA test rider. For 14 out of the last 17 years, the YZ125 has been the best 125cc motocross bike made. Unfortunately, with the advent of the 250cc four-stroke, the YZ125 has been pushed to the brink of extinction. Six years ago, we asked Yamaha to consider building a 150cc version of the YZ125. Yamaha refused on the grounds that the distributors in other countries would not sign off on the YZ150 project. KTM, which just happens to be in o…

WE RIDE A BIG-BORE HONDA CRF469 PROJECT BIKE:

You?re gonna want to read this bike test. This is a story of a project bike that got out of hand. A bike that should have been awesome, and, in fact, had lots of awesome attributes, but turned out to be just average. If only we?d been smart enough to unload the gun before shooting ourselves in the foot. Read it and weep, because the MXA wrecking crew can promise you that we are?weeping, that is. SHOP TALK: DISCUSSING THE COMPONENTS The cylinder on our Honda CRF450 was bored and re-plated to 98mm to incr…

MXA PRODUCT TEST: L.A . SLEEVE YAMAHA YZ272F KIT

      WHAT IS IT? Memorize this phrase: “There’s no substitute for cubic centimeters.”   WHAT’S IT COST? $1398.95 (pipe, cam, cylinder and piston kit)(562) 945-7578. www.lasleeve.com     WHAT’S IT DO? The 250F four-stroke craze has created a unique problem for your typical Vet racer. It’s a choice problem. They love that they don’t get as tired on a 250F as on a 450, but hate how they get beat on the track by their buddies on 450s. It becomes almost cyclical, as a guy will …