Bikers Choice Big Twin Chrome Rear Master Cylinder
The Bikers Choice Big Twin Chrome Rear Master Cylinder is built for riders who know that classic motorcycles deserve more than “close enough” parts. If you ride or restore a 1958–1972 Big Twin, you already understand how important correct braking feel is. A spongy pedal or weak rear brake can take the joy out of riding a vintage machine. This Wagner-style rear master cylinder is designed to bring that confidence back.It is a direct replacement for Harley-Davidson part number 41761-58, meaning it installs the way the factory intended. No cutting. No guessing. Just the right part, in the right place, doing the job it was meant to do.
Designed for Riders Who Actually Ride
Many classic parts look right, but fail on the road. This master cylinder is built to be used, not just admired. The internal design delivers smooth, predictable hydraulic pressure, giving your rear brake a firm and controlled feel. Whether you’re easing into a stoplight or slowing down on a long downhill stretch, the response feels natural and balanced.If you’ve ever rebuilt a Big Twin and taken it out for that first ride, you know the moment. The engine sounds right. The bike tracks straight. And when you tap the rear brake, it just works. That’s exactly what this master cylinder is meant to restore.
Authentic Wagner-Style Design That Fits Like Original
This unit follows the original Wagner-style rear master cylinder used on early Big Twins. That matters more than many riders realize. The correct bore size and internal geometry help maintain the braking feel these bikes were designed around. You don’t end up with an overly stiff pedal or weak braking response.For restorations, this is especially important. Judges notice details. Riders feel them. This master cylinder keeps both happy.
Chrome Finish That Matches the Era
The chrome housing is more than decoration. It completes the classic look of a Big Twin frame, especially on bikes with exposed components. It pairs naturally with chrome exhausts, foot controls, and transmission cases common on vintage builds.At the same time, the chrome finish helps resist corrosion and surface wear. That means fewer worries when riding in changing weather or storing the bike between seasons.
Real Benefits You’ll Notice on the Road
Direct replacement for H-D 41761-58 Saves time and avoids fitment issues.
Consistent rear brake response Better control in traffic and on long rides.
Durable internal construction Built for real riding, not just show bikes.
Classic chrome finish Looks right and lasts longer.
Product Specifications
Product Type: Rear Brake Master Cylinder
Brand: BKC Master Cylinder C
Style: Wagner-style
Finish: Chrome
Replaces: Harley-Davidson 41761-58
Application: Rear brake system
Part Number: 490698
Who This Master Cylinder Is Made For
This part is ideal for:
Riders restoring 1958–1972 Big Twin motorcycles
Owners replacing leaking or worn original units
Builders who want original function without unreliable old parts
Classic Harley riders who value safety as much as style
It works with stock-style brake systems and mounting points, making it a practical choice for both restorations and riders who still put miles on their machines.
Frequently Asked Questions (FAQs)
1. What models does this rear master cylinder fit?
It is designed for 1958–1972 Harley-Davidson Big Twin motorcycles using the original Wagner-style rear brake setup.
2. Does it replace an OEM Harley-Davidson part?
Yes. It directly replaces H-D part number 41761-58.
3. Is this suitable for full restorations?
Absolutely. It preserves the original look and braking feel while offering modern reliability.
4. Will it improve braking compared to a worn original unit?
Yes. Riders often notice firmer pedal feel and more predictable braking.
5. Is the chrome durable for regular riding?
Yes. The chrome finish helps resist corrosion under normal riding conditions.
6. Can this be used on a daily rider?
Yes. It is built for regular street use when installed and maintained properly.The Bikers Choice Big Twin Chrome Rear Master Cylinder isn’t about shortcuts or flashy upgrades. It’s about restoring what made classic Big Twins great in the first place—confidence, control, and correct mechanical feel. If you want your rear brake to work the way it should and look the way it always did, this is a part you can trust.
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