Harddrive Master Cylinder Rebuild Kit - XL 2007-2013 W/ RET Boot 42810-07a — Harley-Davidson Sportster 1200 Custom, Super Low, Nightster (2007-2013)

Harddrive master cylinder rebuild kit for Harley-Davidson Sportster XL models 2007-2013, containing seals and internal components to restore OEM front master cylinder performance. Fits both original and aftermarket master cylinders.

Features

• Complete rebuild seal kit
• Fits OEM and aftermarket front master cylinders
• Includes retainer boot
• Internal springs and pistons included

Specifications

• Brand: Harddrive
• Manufacturer Part #: 87717
• UPC: 191361356056
• Length: 5.7 in
• Width: 0.9 in
• Height: 3.75 in
• Weight: 1.1 lbs
• Country of Origin: Japan

Fitment

Fits 2007-2013 Harley-Davidson Sportster XL models with OEM or aftermarket front master cylinders.

Frequently Asked Questions

Will this fit my 2014+ Sportster?

No — this kit is specific to 2007-2013 Sportster XL models. Later model years use different master cylinder internals.

What's included in the rebuild kit?

Seals, pistons, springs, retainer boot, and all internal components needed to restore the master cylinder to OEM specification.

Do I need any special tools to install this?

Basic socket set and a small Phillips screwdriver are typically sufficient. A master cylinder puller or bench vise setup helps with disassembly.

Can I use this kit on an aftermarket master cylinder?

Yes — this kit is engineered to fit both OEM Harley and quality aftermarket front master cylinders of the same era.