Speedo Seats & Luggage- racks Frame Chassis Suspension Forktubes Wheels Brake Fenders Gastanks Motorparts Gaskets Intake Transmission & Driveline Exhaust Electrical & Lights Handlebars, Cables & Mirrors Oil tanks Oil & Chemicals Fasteners Windshields Forward controls, Footpegs Miscellaneous MOTOR PARTS - TOP END 10 687 AFTERMARKET PARTS & ACCESSORIES FOR CUSTOM MOTORCYCLES / MOTORCYCLESTOREHOUSE.COM 107" TO 129" & 114" TO 132" BOLT-ON BIG BORE KIT M8 BOLT-ON M8 CAPACITY! UP TO 132" WITH STOCK FLYWHEELS S&S, 129" & 132" BIG BORE PISTON & CYLINDER KIT Largest possible 4.320" bore bolt-in big bore kit. Stroker flywheels not required. Works with stock crankcases, case boring is not required, stock flywheels, stock heads and retains stock engine height. Kit includes a forged 4.320" big bore piston kit, black wrinkle powder coated 4.320" big bore cylinders, 2 MLS (Multi-LayerSteel) .030" head gaskets, 2 cylinder base gaskets, 4 cylinder dowels and an S&S cubic inch cam cover badge. Black powder coated finish to match the OEM finish. Note: For the 132" kit S&S measured 135.51HP and 145.83 torque with stock heads, a 550 cam, stock throttle body and a high flow Stealth air cleaner kit. Note: Tuning of fuel injection and ignition may be required. Note: S&S advises 576972 S&S head bolt kit for all big bore applications. 17-23 114" to 132" M8 132" cylinder kit. Converts the 114" engine to 132" (2162cc). 974963 132" kit with black cylinders 974962 132" kit with black cylinders and highlighted fins 17-23 107" to 129" M8 129" cylinder kit. Converts the 107" engine to 129" (2102cc). 974961 129" kit with black cylinders 974960 129" kit with black cylinders and highlighted fins Optional parts 576972 S&S extra strong head bolt kit 974963 107" TO 124" & 114" TO 128" BOLT-ON BIG BORE KIT M8 BOLT-ON M8 CAPACITY! S&S, 124 & 128" BIG BORE KIT Complete bolt-on kit. Incl. black wrinkle cylinders and 4.250" bore forged pistons. Incl. all required head & base gaskets and hardware. Provides a massive increase in capacity with bolt-on installation ease, no case boring, head work or flywheel re-balancing required. Note: S&S advises 576972 S&S head bolt kit for all big bore applications. 17-23 107" to 124" M8 Compatible with stock 107" engines, which have the required 4.375" stroke. Converts the 107" engine to 124". With 1.143” deck height and -4.3 cc dish volume for an 11:1 CR with stock cylinder head combustion chamber volume. 574117 Black cylinders 574118 Black cylinders with highlighted fins 17-23 114" to 128" M8 Compatible with stock 114 engines, which have the required 4.5" stroke. Converts the 114" engine to 128". With 1.0805” deck height and -7.2 cc dish volume for an 11:1 CR with stock cylinder head combustion chamber volume. 574119 Black cylinders 574120 Black cylinders with highlighted fins Cylinders only Stock length 4.250" big bore cylinders. Black wrinkle finished with or without highlighted fins. 574121 Black wrinkle 574122 Black wrinkle with highlighted fins 4.250" big bore head & base gaskets 591056 Cylinder head & base gasket kit 591055 Cylinder head gasket kit 591054 Cylinder base gasket kit 574117 574120 574121 574122 What's that engine size? Handy overview on common cubic inch sizes of stock and big bore / stroker Big Twin H-D and aftermarket engines. 61" = 1000cc (stock 36-40 Knuckle) 74" = 1207cc (stock Knuckle, Pan & Shovel) 80" = 1340cc (stock Shovel & Evo) 88" = 1448cc (stock Twin Cam) 95" = 1550cc (Big Bore 88" Twin Cam) 96" = 1565cc (stock Twin Cam) 103" = 1690cc (Big Bore 96" Twin Cam) 107" = 1750cc (3.937" x 4" M8) 110" = 1802cc (4" Big Bore 96" Twin Cam) 114" = 1870cc (4" bore x 4.5" M8) 117" = 1923cc (4.075" x 4.5" M8) 124" = 2025cc (4.250" x 4.375" M8) 128" = 2092cc (4.250" x 4.500" M8) 129" = 2102cc (4.320" x 4.375" M8) 131" = 2151cc (4.250 x 4.625" M8) 132" = 2162cc (4.320" x 4.5" M8) 136" = 2222cc (4.320 x 4.625" M8) 89" = 1459cc 93" = 1522cc 95" = 1546cc 96" = 1565cc 98" = 1607cc 100" = 1647cc 103" = 1690cc 107" = 1750cc 110" = 1802cc 111" = 1806cc 113" = 1853cc 116" = 1905cc 117" = 1916cc 124" = 2025cc 128" = 2092cc 129" = 2102cc 131" = 2151cc 132" = 2162cc 136" = 2222cc 142" = 2327cc
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