Pre-Evo – Engine & Gaskets

MCS Sprocket Shaft, 1955 Big Twin – 1955 Big Twin Only OEM style replacement. Splined style. Repl. 24001-55. Fitment 1955 Big Twin only (NU) Produc...

MCS Sprocket Shaft, 45" Flathead – 1929–1973 45" (750cc) Flathead Models OEM style replacement. Repl. 352-29 and 24000-29. Fitment 29-73 45" (750cc...

Gardner-Westcott Panhead Rocker Cover Screw Kit. Chrome Allen. Long – 1948–1965 Panhead Chrome plated. Custom allenhead (socket head) bolt set. Use...

MCS 84-99 Tappet Roller Repair Kit – 1984–1999 Evo Big Twin; 1986–1990 XL… Complete reproduction tappet rollers with needle bearings and axles. Rep...

MCS 52-85 XL Solid Tappet Assembly. Standard Size – 1957–1985 XL Sportster Complete with roller. OEM style reproduction lifter. Repl. 18508-52B. Fi...

MCS 3-5/8" Big Bore Shovel Cylinder Front, Black – 1966–1984 Shovel Stock 5.330" length. Crankcases must be bored to accept the larger diameter cyl...

MCS Replacement Cylinder 80" Shovelhead, Rear – 1979–1984 80" (1340cc) Shovel Black painted stock replacement cast iron cylinder. Stock 3-1/2" bore...

K&N Crankcase Breather Filter. Male 1/2" Connector – 1/2" Hose Chrome. Fits a 1/2" oil hose. Designed for use on the crankcase ventilation syst...

K&N Crankcase Breather Filter. Female 3/8" Connector – 3/8" Nipple Female rubber connector to fit a 3/8" nipple. Can be installed directly to t...

K&N Crankcase Breather Filter. Male 3/8" Connector – 3/8" Hoses Chrome. Fits a 3/8" oil hose (standard H-D oil hose). Designed for use on the c...

MCS Pinion Shaft, L83-86 B.T – L1983–1986 Big Twin Repl. 24006-83. Fitment L83-86 Big Twin (NU) Product Details Brand: MCS Category: MOTOR PARTS...

MCS 53-84 Tappet Block, Front. Black – 1953–1965 Panhead; 1966–1984 Shovelhead Replacement for L76-84 Shovel (excl. L1982 models with special route...

Gardner-Westcott Cam Cover Mount Kit. Acorn – 1936–1969 FL; 1932–1973 45" Flathead Gardner-Westcott, cam cover mount kit. Acorn Fitment 36-69 FL; 3...

MCS Thrust Washer Camshaft. .005" – 1954–1985 XL Sportster; 1937–1973 45"… Camshaft shim; used to achieve correct cam end-play. Fitment 54-85 XL Sp...

Belt Drives Ltd. Oil Seal for BDL TC Cam Cover – 1999–2017 Twin Cam with Gear Driven Cams… Replacement part for 515186 BDL cam cover for Twin Cam m...

Belt Drives Ltd. Cam End Bolt for BDL TC Cam Cover – 1999–2017 Twin Cam with Gear Driven Cams… Replacement part for 515186 BDL cam cover for Twin C...

Belt Drives Ltd. Cam End Adapter for BDL TC Cam Cover – 1999–2017 Twin Cam with Gear Driven Cams… Replacement part for 515186 BDL cam cover for Twi...

Gardner-Westcott Head Bolt Kit, 12-Point. Chrome – 1948–1984 Big Twin Chrome plated. Traditionally used with big bore cylinders where space is limi...

MCS Rocker Arm Shaft. Import – 1957–1985 XL Sportster OEM style replacement. Repl. 17435-57B. Note: On 57-70 XL models the 71-85 end plug must be u...

Manley Valve Guide Seal Set. Viton 4-Pk – 2005–2017 Twin Cam; 2004–2022 XL… With 4 seals. Comes with with built-in spring-loaded Viton wipers. Valv...

Manley Valve Guide Seal Set. Viton (24) – 1984–1999 Evo Big Twin; 1999–2004 Twin… With 24 seals. Comes with with built-in spring-loaded Viton wiper...

Manley Valve Guide Seal Set. Viton 4-Pk – 1984–1999 Evo Big Twin; 1999–2004 Twin… With 4 seals. Comes with with built-in spring-loaded Viton wipers...

Manley Valve Guide Seal Set. Viton 4-Pk – L1981–1984 1340cc Shovelhead With 4 seals. Comes with with built-in spring-loaded Viton wipers. Valve ste...