510-0728 M8 only brochure_no_MSRP

Milwaukee-Eight ®

BIG BORE CYLINDER SETS CYLINDER SETS Displacement Finish

Fitment: • 2017–2021 touring models • 2018–2021 Softail ® models Features & Benefits: • 4.250" Bore • Wrinkle Black or Black Granite Finish • Available with or without Highlighted Fins

Part #

Wrinkle Black with Non-Highlighted Fins 910-0683 Wrinkle Black with Highlighted Fins 910-0682 Black Granite with Highlighted Fins 910-0739

124" 128" 131"

FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES WHICH MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY. NOT LEGAL FOR SALE OR USE NATIONWIDE ON ANY FEDERAL POLLUTION CONTROLLED MOTOR VEHICLE UNDER THE CLEAN AIR ACT.

BIG BORE PISTON KITS • Piston kits include set of pistons, rings, wristpins, and clips

4.250" BORE PISTON KIT FOR M8 MODELS Displacement Deck Height Stroke

Standard

+.010

124" 4.3cc Dished 128" 7.3cc Dished 131" 10.3cc Dished

920-0135

920-0141

1.143"

4.375"

Performance Kits

920-0140

920-0142

1.0805"

4.500"

1.0805" 920-0148 FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES WHICH MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY. NOT LEGAL FOR SALE OR USE NATIONWIDE ON ANY FEDERAL POLLUTION CONTROLLED MOTOR VEHICLE UNDER THE CLEAN AIR ACT. 4.625" 920-0149

REPLACEMENT PARTS FOR PISTONS

2 Pack 940-0060 2 Pack 940-0062

Piston Ring Set

Piston +.010" Ring Set

94-9278-S 940-0037

Wristpin Keeper

Wristpin, .927” x 2.500"

GASKET KIT Description

Thickness

Qty Part #

Head gasket, 4.250" Bore, Stock bolt pattern Base gasket, Stock to 4.250" Bore, Stock bolt pattern

2 Pack 930-0140

.030"

2 Pack 930-0139

.014"

Gasket Kit, includes Head, Base, & Exhaust, 4.25" Bore

900-0955

500-0835

Plug

4 Pack 500-0849

Cylinder Dowel Pin HARDWARE KIT

910-0677

29