Shop is Juniors MX Supply established in 1998. Owners of klx110parts dot com, crf50 dot com, & xr50 dot com. Mini Bikes is what we do! This is an affordable kit that will convert your TB 88cc Race Head kit into a powerful open class 108cc engine (much more powerful than the common Chinese 107 and 125cc engines).
Also, this crank was made specifically for the newer engines and thus, you will not have any fitment issues like trimming the piston skirts in order to clear the crank or the piston not lining up with the cylinder deck. The kit includes the following parts. 51mm Crankshaft with NTN bearings.
Crankcase and clutch cover gaskets. This kit requires engine disassembly and therefore, we highly recommend a professional technician install this kit. If you plan on doing it yourself, you will need to have a Clymer or Honda shop manual. Instructions do not come with the kits but the installation of the crankshaft is just like installing a stock Honda crankshaft. You should also have the following parts.
CR8HSA spark plug (not required, but recommended). Additionally, we do not recommend the use of an inner rotor kit with this clutch (on a 108cc or larger engine) as it can lead to premature clutch failure due to extra fatigue placed on the clutch housing. However, we offer an upgrade which allows use of inner rotor kits and larger displacement engines - Please see the Billet Housing upgrade we have available.
Also, do not tighten the clutch nut with a hammer and screw driver - it must be torqued on! The item "Trail Bikes Stroker Crank Kit 1 Honda XR50 CRF50 XR CRF50 PARTS" is in sale since Tuesday, July 31, 2018. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Other Engines & Engine Parts". The seller is "xr50com" and is located in Meridian, Idaho. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Croatia, Malaysia, Brazil, Colombia, Germany.