40-54 Big Twin (NU) – BikersHouse

Colony Colony, sprocket shaft oil seal

Tue, 23 Dec 2025 04:30:36 +0000

fits 39-73 all 45″ (750cc) Flathead (NU)

With snap ring. OEM replacement reference 24775-39 (early 355-39).

Home > Parts > Drivetrain > Primary > Other > Colony, sprocket shaft oil seal

Mon, 22 Dec 2025 10:30:55 +0000

fits 40-54 Big Twin (NU)

Left side crankcase bearing race. Standard size is 2.0015″ OD.

Home > Parts > Engine > Lower End > Crankcases > Sprocket shaft crankcase bushing. std

Mon, 22 Dec 2025 10:29:11 +0000

fits 39-73 45″ (750cc) Flathead (NU)

Left side crankcase bearing race. Standard size is 1.753″ OD.

Home > Parts > Engine > Lower End > Crankcases > Sprocket shaft crankcase bushing. +.005″

Rodolfos — Fri, 19 Dec 2025 20:43:47 +0000

fits 40-54 FL (NU)

Outer

Home > Parts > Engine > Lower End > Pinion Shafts > Thrust washer, pinion shaft bearing