1.5mm Thick and 2mm thick kevlar composite (do not pop out like those red rubber rings)

Fully refurbished with new phosphor bronze guides and valve seats, re-cut as new.

Heavyweight crankshaft assembly with all new spindles, new crank pin and new forged and polished conrod with needle roller. Big end new, little end with 16mm bush, all crankshafts are balanced.

Additional extra thickness rocker cover gaskets for Finned Rocker Box Covers