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Description
Here the crankshaft TOP PERFORMANCES with his pack bearings and oil seals. Its quality is not proven, it is strengthened, and as a beginning it has no specific work at balancing and it has not filled masses.
It will be perfect on an engine originally Kit 50cc 70cc see little that requires a large volume low engine. For DERBI euro 1 & 2 except GPR / motor fader / balance shaft.
Cut in best steels, it is strong and durable. The rod is a model reinforced with internal lubrication.
Delivered with its cage needle, set of 2 bearings + 2 joints spy, he took the same characteristics (dimensions, sizes ...) as the origin.