Hastings, 2-3/4" bore piston ring set. STD - 50-73 45" (750cc) Flathead; all 52-56 K 45" (750cc) and KH, KHK 55" (900cc) Flathead models (NU) 526339 The seat base is prepared

The seat base is prepared so that many aftermarket seats can be used

537080 (13

Note: Does Not Fit Models with Hydraulic Clutch

- Black body - Red lens - ECE approved lens - Includes incandescent (regular) 12-Volt light bulb - Dimensions approx

6 in 1 screwdriver

Hastings, 2-3/4" bore piston ring set. STD - 50-73 45" (750cc) Flathead; all 52-56 K 45" (750cc) and KH, KHK 55" (900cc) Flathead models (NU) 526339 The seat base is preparedUsed with late style 1950 1973 type pistons with 1 16" gray iron parkerized compression rings and the 3 piece flex vent style chrome oil rings. Also fits 52 56 K, KH, KHK 55" (900cc) Flathead models. Std Bore: 2. 745" (69. 723mm). 1st ring: 1. 6mm. 2nd ring: 1. 6mm. oil ring: 4. 75mm. Note: OEM 1929 1949 pistons are equipped with 3 32" (2. 3mm) 1st. & 2nd rings and 1 8" (3. 2mm) oil ring, for these Hastings rings see 1950 1973 Flathead model years.