TB 55mm Stroker Crankshaft Kit – 03-09 Models

55mm Stroker Crankshaft Kit – 03-09 Models

55mm Stroker Crankshaft Kit. Increase your displacement, torque, and power by replacing your stock crankshaft with this one. The kit also includes a new cam sprocket and DID Cam Chain. No modifications are needed and works with the stock bore and cylinder head or with all 134cc, 138cc, 143cc, 160cc, 165cc, and 178cc bore & race head kits that use cylinders with a skirt. If you have an 07 or older model with the original OEM Output Shaft, we highly recommend also purchasing our strengthened Output Shaft available in this section. The 02-07 Output Shafts were very weak and would often snap so best to update while you have the engine apart.

NOTE: For the 03-09 Models, the new cam chain and sprocket in the kit must be used.

TBparts.com is the only distributor of our products and the parts are shipped directly from the manufacturing facility to us. When a product is purchased from us, it has not gone through several middlemen and thus, the savings goes to the consumer. Additionally, to keep prices down, we use basic packaging and installation instructions are not included. The end result is affordable and high quality performance parts that will add some power and excitement to your bike!