Thick wall design increases durability and performance Increases engine displacement to 1679cc with standard 69mm crankshaft Complete kit includes barrels, pistons, rings, and pins The AA Performance Machine In Thick Wall 88mm Cast Barrel & Piston Kit is an excellent upgrade for your standard 1300-1600cc Type-1 engine. Designed to bolt directly onto the engine case, this kit boosts displacement to 1679cc without the need for crankcase machining. However, due to its thick-wall construction, the cylinder heads will need to be machined to fit, requiring 90.5/92mm sized heads, which can be sourced from our range or adapted from 1600cc heads.
