VRWEARE Brake Master Cylinder 7/8" (22mm) Right-Hand — Aluminium Universal Fit, 12.7mm Bore

VRWEARE's 7/8" (22mm) right-hand brake master cylinder is a universal aluminium-alloy replacement pump designed to fit most scooters, mopeds, ATVs, dirt bikes, go-karts and small motorcycles.

This compact brake master cylinder assembly provides a direct-fit upgrade or replacement for vehicles using a 22mm handlebar and a 12.7mm piston bore. Machined from aluminium alloy, the unit balances light weight and strength while including a mirror-ready M10 threaded hole and a 10x1.25mm banjo bolt thread for standard hydraulic line connections. Review compatibility and measurements before purchasing to ensure proper fitment and safe installation.

Will this brake pump fit my handlebar and hydraulic line?

Most installations work if your vehicle uses a 7/8" (22mm) handlebar clamp and a 12.7mm piston bore diameter. The banjo fitting thread follows the common 10x1.25mm size, and the body includes an M10 rearview mirror mount.

• Handlebar clamp size: 7/8" (22mm)
• Piston bore diameter: 12.7mm
• Banjo bolt thread: 10x1.25mm
• Includes M10 mirror mounting hole

How simple is the installation and what should I check first?

Installation is straightforward for most DIYers familiar with brake hydraulic systems: remove the old master cylinder, fit the new unit to the handlebar, connect the brake line using the correct banjo bolt, and bleed the system. Always inspect threads, hose orientation, and reservoir sealing before use.

• Confirm handlebar and bore measurements before ordering
• Use correct 10x1.25mm banjo bolt and crush washers
• Bleed brake lines fully after installation to remove air
• Verify mirror and lever clearance on the handlebar

What are the build details and weight I should know about?

The master cylinder is machined from aluminium alloy for corrosion resistance and reduced weight, weighing approximately 336 g (11.85 oz). It is sold as a single assembly—ready to mount—so you receive only the brake pump unit unless additional fittings are specified by the seller.

• Material: aluminium alloy for strength and lightness
• Weight: about 336 g / 11.85 oz
• Package contents: 1 x brake master cylinder assembly
• Sold as a right-hand brake lever configuration

How do I confirm compatibility with my vehicle type?

This master cylinder is marketed as a universal fit for many small vehicles—scooters, Vespas, mopeds, ATVs, dirt and pocket bikes, go-karts and similar machines—provided the physical dimensions match. If your bike has unusual fittings or nonstandard hydraulic sizes, compare measurements closely or consult a mechanic.

• Fits many scooters, mopeds, ATVs, dirt bikes, go-karts
• Measure clamp and piston bore before purchase
• Check banjo bolt thread and mirror mount compatibility
• Seek professional help for custom or vintage applications

Who this is for: Riders and mechanics looking for a lightweight, universal right-hand brake master cylinder to replace worn or damaged pumps on small motorcycles, scooters, ATVs, dirt bikes and off-road machines. Ideal for anyone who needs a machined aluminium assembly with common banjo threading and a built-in mirror mount, and who can verify the 22mm clamp and 12.7mm bore fit their setup.