Single lobe cams. The journals are very large, as long as there's good oil pressure, it's very unlikely these will ever score up and fail.
280cc big bore cylinder ready for installation
280cc big bore piston in place
We have the first new 280cc big bore kit installed.
Bill Blue is going to be testing the 280 kit for a bit, and is in development of the bigger kit.
(my guess is it will be 300cc or more)
Bill developed and has manufactured the Kawasaki 250 KLX351 kit for several years. His motorcycle experience goes well back to the '60's, he is involved in cycle restorations and our real passion, the smaller enduro bikes like the CRF250L.
He says stay tuned for the testing of the big bore kits.