PART NUMBER: 517-828G - Granite Cylinders. M-8 is the most powerful top end and cam kit we've ever produced for a production motorcycle! The big breathing 4-valve heads on the M-8 engine just love displacement, so we've developed this kit for use with our new 4.250?
These cylinders are fitted with flat-top forged pistons and topped off with Zipper's Stage III CNC headwork performed on your cores. Our Red Shift 552 cam delivers HUGE torque as soon as you open the throttle, and carries it across the RPM range to provide instant acceleration from any RPM. Components included in the Muscle 128? Kit: Zipper's 4.250?
Cylinder & Piston Kit Zipper's Stage III CNC Headwork (on your cores) Red Shift 552 Cam & Bearing Quikee Pushrods, Covers & Tappet Cuffs Top End & Cam Gaskets, New Headbolts. Compression is set to a relatively modest 10.9:1 with 225# cranking compression - same as stock, so starting is not an issue. It has an amazing sound at idle and under load, with 67 more horsepower than a stock 114 or 117, peaking at 5,800 RPM. Peak torque starts at 2,800 rpm - 50 pounds more than stock, staying at nearly 150 ft/lbs for over 2,000 RPM, right where you ride! This super-flat torque curve delivers sport-bike-punishing instant throttle response at any RPM, allowing the bike to be ridden like a stocker when desired - But what fun is that?
An EFI tuner, performance exhaust, oversize throttle body, injectors-intake will be required to achieve results shown. Requires your heads to be provided for modification. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Big Bore & Top End Kits". The seller is "americanclassicmotors" and is located in this country: US.
This item can be shipped worldwide.