Zipper’s 124/128 M8 SLEEPER BIG BORE KITS

124/128 M8 SLEEPER BIG BORE KITS

No replacement for displacement, right?

Our Sleeper kits easily turn your 107 M8 into a 124, or your 114/117 M8 into a 128 inch powerhouse!  Kit includes new 4.25” bore cylinders fitted with Zippers-designed forged pistons, Red Shift 468 or 472 cam, Red Shift Dual-Piston tensioner with offset drive gears, quikee pushrods and chrome or black covers, new cam bearing and gaskets. Incredible power gains with stock heads, even more if you add our Stage II blueprint headwork!

Not legal for sale or use in California on any pollution controlled motor vehicle.
Not legal for sale or use on any EPA pollution controlled motor vehicle.

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