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900666 Brake shaft lever, left side

Fits: 36-57 Big Twin OEM: 42556-36 OEM: 900666
£14.18 SAVE £2.13 (15%)
£12.05

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Part #: 900666

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Iron City Dealer

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Specifications

Brand
MCS
Part Number
900666
OEM Reference
42556-36
Pack Quantity
Each
Category
Brake Shaft Levers
VAT Rate
20%

About This Product

For those maintaining the mechanical rear brake on a vintage Harley, this left-side brake shaft lever is a crucial component. It features the correct single-hole configuration for 1936 to 1957 Big Twin models, including Knuckleheads and Panheads. Designed to replace OEM 42556-36, this lever ensures that your brake linkage remains tight and responsive. Over decades of use, the original levers often suffer from wear at the pivot points, leading to a sloppy brake feel. Installing a fresh MCS replacement is a great way to ensure your classic stops as reliably as possible while maintaining the correct period-correct appearance.

Manufacturer part number: 900666.

Fitment

17 models

36-57 Big Twin

OHV
5 models
Brand Year Model
Harley-Davidson 1941–1947 Knucklehead E-1000
Harley-Davidson 1948 Knucklehead EL-1000
Harley-Davidson 1941–1947 Knucklehead F-1200
Harley-Davidson 1941–1945 Knucklehead FL-1200
Harley-Davidson 1948 Panhead F-1200
Sidevalve
4 models
Brand Year Model
Harley-Davidson 1943 Flathead U-1200
Harley-Davidson 1942–1948 Flathead UH-1300
Harley-Davidson 1942–1948 Flathead UL-1200
Harley-Davidson 1941–1944 Flathead ULH-1300
Touring
8 models
Brand Year Model
Harley-Davidson 1950–1952 Hydra Glide E-1000
Harley-Davidson 1949 Hydra Glide EL-1000
Harley-Davidson 1949–1952 Hydra Glide F-1200
Harley-Davidson 1951–1955 Hydra Glide FL-1200
Harley-Davidson 1953–1954 Hydra Glide FLE-1200
Harley-Davidson 1953–1956 Hydra Glide FLEF-1200
Harley-Davidson 1957 Hydra Glide FLF-1200
Harley-Davidson 1956–1957 Hydra Glide FLH-1200

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Who are we? Leeds Harley-Davidson - Iron City Motorcycles

Who are we? Leeds Harley-Davidson - Iron City Motorcycles

This product is fulfilled by Iron City Motorcycles, Leeds' authorised Harley-Davidson® dealer, serving the UK with a full range of Genuine Motorclothes®, dealer merchandise, and official Harley-Davidson parts & accessories — available for UK and international delivery.

From OEM Parts to retro lifestyle wear to aftermarket stockits we have what you need to keep you riding all year round.

Use our official OEM parts finder to browse our full Genuine Harley-Davidson® Parts and our associated approved aftermarket catalogues.

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