There’s no replacement for displacement! These 4” big bore cylinders with forged and coated KB pistons increase the displacement of an 88” Twin Cam to 97” and raise a 96” Twin Cam to a whopping 106” with no case machining. Both kits give you a 10:1 compression ratio. Available in black and natural finishes.
The California Air Resource Board (CARB) has restricted Custom Chrome and its Vendors from sales and shipping of the following items to California residents. For more information please see CARB Notice
97” Kit black finish Fits Twin cam 88" models from 99-06