Forged Piston and Ring Set for BRT 66mm / +6 Crank / 34/29 Head ASS-GD-0590 This should be done when

This should be done when you first hook the ECU to your bike

High quality O-ring chain seals in lube and keeps water and mud out

Anodized black with machined finish

simultaneous installation with the three-dimensional shape manifold enables smooth inhalation effect from the carburetor to the combustion chamber without resistance

Make sure you select the proper fitment for the pegbar that you have

Forged Piston and Ring Set for BRT 66mm / +6 Crank / 34/29 Head ASS-GD-0590 This should be done whenBRT Replacement 66mm Forged Piston and Ring Set KLX140 Please Select Compression Ratio from drop down. (14: 1 Compression ratio can ONLY be used with high octane race fuels) This is a brand new 66mm forged piston and ring set used on the BRT big bore kits w 34 29 head and +6mm Cranks. Does not work with any other combo. Includes: Wrist Pin Rings Clips and 66mm Forged Piston Piston pin is 14mm We also have performance CDI's to increase rpm limiter,