Pistons - Rings - Cylinders

Bolt-on kit Updated fins No case machining required Forged pistons Made in the USA Includes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 camshaft, valve springs Oil Pump/Cam Plate: Precision machined from billet aluminum Passage...

Bolt-on kit Updated fins No case machining required Forged pistons Made in the USA Includes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 camshaft, valve springs Oil Pump/Cam Plate: Precision machined from billet aluminum Passage...

Bolt-on kit Updated fins No case machining required Forged pistons Made in the USA Includes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 camshaft, valve springs Oil Pump/Cam Plate: Precision machined from billet aluminum Passage...

Bolt-on kit Updated fins No case machining required Forged pistons Made in the USA Includes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 camshaft, valve springs Oil Pump/Cam Plate: Precision machined from billet aluminum Passage...

Bolt-on kit Updated fins No case machining required Forged pistons Made in the USA Includes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 camshaft, valve springs Oil Pump/Cam Plate: Precision machined from billet aluminum Passage...

Bolt-on kit Updated fins No case machining required Forged pistons Made in the USA Includes oil pump/cam plate, pushrods, tappets, tappet cuffs, 550 camshaft, valve springs Oil Pump/Cam Plate: Precision machined from billet aluminum Passage...

Bolt on big bore kits mean easy installation with no machining and no rebalancing S&S bolt-in cams and premium tappets make the most of the added displacement Cams are .482" lift and 240° duration intake and 234° duration exhaust ...

Bolt on big bore kits mean easy installation with no machining and no rebalancing S&S bolt-in cams and premium tappets make the most of the added displacement Cams are .482" lift and 240° duration intake and 234° duration exhaust ...

Wrinkle Black w/ Highlighted Fins 4.250" bore Updated profile with stock bolt pattern 4.840" Made in the USA Works with stock crankcases. Compatible Vehicles Years Make Make Notes 2023-2025 Harley-Davidson Breakout FXBR...

Black Granite w/ Highlighted Fins 4.250" bore Updated profile with stock bolt pattern 4.840" Made in the USA Works with stock crankcases. Compatible Vehicles Years Make Make Notes 2023-2025 Harley-Davidson Breakout FXBR...

Wrinkle Black w/o Highlighted Fins. 4.250" bore Updated profile with stock bolt pattern 4.840" Made in the USA Works with stock crankcases. Compatible Vehicles Years Make Make Notes 2023-2025 Harley-Davidson Breakout FXBR...

All piston kits come with two pistons, rings, wrist pins, and wrist pin keepers For 128" M8 motors +0.010" bore oversize Compression ratios listed are approximate and are calculated using the correct length cylinders as specified by...