Pack ATHENA 112cc Ø53mm mono segment (crankshaft 51mm stroke) for Yamaha YZ 85 from 2002 to 2018

Here is the complete high engine kit from ATHENA for your Yamaha YZ 85 motorcycle from 2002/2018.

100% complete with its cylinder, piston, seal pack, cylinder head ... but above all its long stroke crankshaft to considerably increase the performance of your 2T machine.

Originally, the stroke of your crankshaft is 47.8mm while it is 51mm, so you will switch to 112cc instead of 85cc!

Basically, you have a high complete competition engine, made from the best materials, for a gain in torque and peak speed incomparable at the origin.

All the spare parts for this maxi pack are sold here ... the pistons in 3 different ribs, the cylinder head, the vilo ...

As an option we offer you a stage 1 preparation, this preparation is a modification of the channels and the exhaust port by increasing the diagrams and improving the duct, it increases the performance of the cylinder. An improvement to the piston and the bottom of the skirt is also included in this modification. Allow a little extra time for this preparation!

Mounts on Yamaha YZ 85 - 2002/2018