TWO STROKE PERFORMANCE - BILLET CYLINDER HEAD - YAMAHA YZ125 05-21 / YZ125X 20-22Choose your desired compression ratio from the drop down list. *** TSP Heads & Inserts include Cylinder head O rings & Washers free of charge! *** Medium Compression: This design offers a similar compression ratio to the stock head, but with a much better design. Squish clearance is tighter than stock and the design is much more detonation resistant than the stock head. It offers improved power throughout the rev range and makes a great bike even

-HydradriEVO inner membrane

Proprietary ash-free additive system keeps your engine running clean and free of gum formation

You need to redirect that output backwards towards heat exchanger and reduced it to 5/8″ and this hose will simplify that for you

205072-Rhino Rhino

Unless otherwise stated kits are for bikes with stock tanks

-Square ‘removal tool’ nut included

Advanced micro chemistry protects aluminum

520 / 525 MXC RFS 2000 - 2005

Dual raised beads facilitate inserting tire lever under tire bead and prevents tire lever from slipping

Some models of YZ250FX/YZ450FX/WR250F/WR450F not listed are compatible

• Includes Log Book to record the service life -oil changes

Aircraft quality TIG welding