Forged Piston and Ring Set for BRT 66mm / +6 Crank / 34/29 Head ASS-GD-0590 Aluminum machined screw that allows

Aluminum machined screw that allows quick adjustment at your fingertips

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

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

Black - 1366530015

Larger Exhaust Cut Out

Forged Piston and Ring Set for BRT 66mm / +6 Crank / 34/29 Head ASS-GD-0590 Aluminum machined screw that allowsBRT 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,