Engine

Features & Benefits:- * ID # 12873 * Bore = 4.310" * Stroke = 4.500" * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers ...

Features & Benefits:- * ID # 14234 * Bore = 4.250" * Stroke = 4.375" * Steel gas nitride coated top ring * Ductile iron Napier 2nd ring * Thre...

Features & Benefits:- * ID # 14235 * Bore = 4.250" * Stroke = 4.375" * Steel gas nitride coated top ring * Ductile iron Napier 2nd ring * Thre...

Features & Benefits:- * ID # 12873 * Bore = 4.310" * Stroke = 4.500" * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers ...

Features & Benefits:- * ID # 12873 * Bore = 4.250" * Stroke = 4.500" * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers ...

Features & Benefits:- * ID # 12875 * Bore = 4.250" * Stroke = 4.375" * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers ...

Features & Benefits:- * ID # 12776 * Bore = 4.180" * Stroke = 4.375" * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers ...

Features & Benefits:- * Super Duty KB Forged Coated Anodized Piston Kit. * 114 or 117ci to Big bore 128" piston kit for Milwaukee 8 when using...

Features & Benefits:- * Super Duty KB Forged Coated Anodized Piston Kit. * Big bore 120" piston kit for Milwaukee 8. * Factory 114" and 117" ...

Features & Benefits:- * Super Duty KB Forged Coated Anodized Piston Kit. * 107ci to Big bore 124" piston kit for Milwaukee 8 when using 4.250"...

4.016" Bore x 4.500" Stroke * High quality, direct replacement piston ring kit * One Set Required Per Bike * Sold as a Pair. * Made in the USA * Re...

3.937" Bore x 4.375" Stroke * High quality, direct replacement piston ring kit * One Set Required Per Bike * Sold as a Pair. * Made in the USA * Re...

Features & Benefits:- * Crafted from strong, billet 6061 T6 aluminum * Patent Pending Dual Spray Technology for uniform piston cooling * Revise...

* The strongest studs & bolts available! * Top engine builders demand quality fasteners! Secure your engine with complete confidence * Superior...

Cylinder Studs: Features & Benefits:- * 4140 Chrome Moly studs, oil quenched and tempered to 39-44 HRC * 180,000psi Tensile Strength * Rounded...

* The strongest studs available! * Top engine builders demand quality fasteners! Secure your engine with complete confidence * Superior in strength...

Big bore, big compression and big throttle take their toll on hard parts and engine studs are no different. If your motor sees any of these we reco...

S&S has been building big bore kits since the 60s and has it down to an absolute science. Our latest efforts are aimed at the Milwaukee Eight® ...

S&S has been building big bore kits since the 60s and has it down to an absolute science. Our latest efforts are aimed at the Milwaukee Eight® ...

Features & Benefits:- * Upgrades Milwaukee-Eight 114ci & non-CVO 117ci to 132ci * 4.320" Bore * 4.500" Stroke (4-1/2") * Forged Pistons. *...

Features & Benefits:- * Upgrades Milwaukee-Eight 114ci & non-CVO 117ci to 132ci * 4.320" Bore. * 4.500" Stroke (4-1/2"). * Forged Pistons....

Features & Benefits:- * Upgrades Milwaukee-Eight 114ci to 128ci * 114ci to 128ci Big Bore Kit * 4.250" Bore * 4.500" Stroke (4-1/2") * Forged ...

Features & Benefits:- * Upgrades Milwaukee-Eight 107ci to 129ci. * 4.320" Bore. * 4.375" Stroke (4-3/8"). * Forged Pistons. * 11.1 Compression ...

Features & Benefits:- * Upgrades Milwaukee-Eight 107ci to 129ci. * 4.320" Bore. * 4.375" Stroke (4-3/8"). * Forged Pistons. * 11.1 Compression...

* Steel 1.0mm Top Ring, 4.250 bore * Sold per cylinder/piston * Middle Ring = 2-MS28-4250-THG * Bottom Ring = 3-D30-4250-0

* 3.0mm .150 Radial Wall Low Tension Flex Vent Oil Ring, 4.250 bore * Sold per cylinder/piston * Top Ring = 1-MS18-4250 * Middle Ring = 2-MS28-4250...

* CAR-927-2250-18CP1C * ID # 4132 * Wristpin .927" dia x 2.250" length .180" Wall 5100 Chromoly Chamfered For Wire Lock * Sold per cylinder/piston

KPMI Cylinder Studs are made from 180,000 psi yield strength, fine grain, heat treated, aircraft grade alloy steel. When you want a stud that meets...

Features & Benefits:- * ID # 6918 * Bore = 4.060" * Stroke = 4.625" * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers *...

Features & Benefits:- * ID # 6918 * Bore = 4.070" * Stroke = 4.625" * Fully CNC machined * Balanced to +/- 1 gram * Double forced pin oilers *...

Spiral Retaining Ring Installation Tips: 1. The spiral retainer comes unsprung. KB suggests that you slightly spring the retainer about 1/2"-3/4" b...

Features & Benefits:- * Use with performance exhaust, air cleaner, S&S 585 bolt-in cams & EFI tune to produce massive horsepower gains....

Features & Benefits:- * Use with performance exhaust, air cleaner, S&S 585 bolt-in cams & EFI tune to produce massive horsepower gains....

Features & Benefits:- * Bore = 4.000" * Stroke = 4.375" * Forged 4032 Alloy is an 11% silicon alloy that is formed in a forging press then full...

Features & Benefits:- * Bore = 4.010" * Stroke = 4.375" * Forged 4032 Alloy is an 11% silicon alloy that is formed in a forging press then full...

Features & Benefits:- * Sold per Piston. * Replacement Piston Rings for S&S 110ci Big Bore Kits #'s SS910-0598 & SS910-0599. Tech Tips:...

Features & Benefits:- * Replacement Piston Rings for S&S Milwaukee-Eight 107ci to 129ci & 114ci to 132ci Big Bore Kits (4.320" Bore) Te...

Features & Benefits:- * Replacement Piston Rings for S&S Milwaukee-Eight 107ci to 124ci & 114ci to 128ci Big Bore Kits. (4.250" Bore) T...

Features & Benefits:- * Moly Faced. * Sold Each/Per Piston * 2 Required Per Bike. Proudly Made in the USA by S&S Cycle !

* Milled from Billet Aluminum 6061-T6 * Revised spray locations for more effective cooling * Dual jets for uniform piston cooling * Shorter than OE...

Features & Benefits:- * 3.875" Bore * Black with CNC Machined Fins * Sold each, fits front & rear * Includes Dowel Pins (Does NOT include P...

* The strongest studs available! * Top engine builders demand quality fasteners! Secure your engine with complete confidence * Superior in strength...

Features & Benefits:- * OEM Style Heat Treated Alloy Steel Studs Equal or Surpass Original Equipment. * Set of 8 Studs. * Replaces OEM # 16834-...

* Cylinder Stud kit, 3/8-16 x 6.070", 8 pack. * Replaces OEM # 16834-99 Suggested Additional Purchase: Head Bolt Kit # CM-2012-8 or FE-3005

Features & Benefits:- * Sets balanced to + or - 1 gram * Made from a forging * Laser engraved * 100% Magnafluxed * Fully CNC Machined * Shotpee...

* 117" Standard Compression - Flat Top Pistons * Note: Crankcases must be bored to accept the larger 4-1/8" bore cylinders * Compression Ratios: 85...

* 117" Standard Compression - Flat Top Pistons * Note: Crankcases must be bored to accept the larger 4-1/8" bore cylinders * Compression Ratios: 85...

Features & Benefits:- * Includes 3cc Dome Forged Pistons. * Includes 0.045" Head Gaskets. * 3.937" Bore. * 4-3/8" Stroke. * 10.5:1 Compression ...