Upgrade Motorsport CNC 0.625” Master Cylinder – Lightweight Performance for Brake & Clutch Systems
- Grant Lockhead
- May 3
- 3 min read
When it comes to maximising performance and reliability on the track, your braking and clutch systems are critical. One of the most effective upgrades for race, rally, drift, and track-day cars is the Upgrade Motorsport CNC 0.625” Master Cylinder – Lightweight Performance. This high-spec lightweight brake master cylinder delivers exceptional precision, weight savings, and value, making it ideal for competitive motorsport applications.
Why Choose a Lightweight CNC Master Cylinder?
The Upgrade Motorsport 0.625" CNC billet master cylinder is designed for high-performance applications where every gram counts. Weighing just 207g, it’s one of the lightest CNC Alloy brake / clutch master cylinders on the market—almost 40% lighter than typical alloy versions. Reducing unsprung and cockpit weight contributes to improved responsiveness, especially when installed in hydraulic handbrakes or clutch pedal setups.
Precision-Engineered for Motorsport
This CNC-machined master cylinder is built from aerospace-grade anodised aluminium for maximum strength and resistance to corrosion. The compact billet housing fits neatly into tight pedal boxes, making it ideal for drift builds, rally cars, and custom track-day projects. Whether you're running a hydraulic clutch master cylinder or upgrading a bias-controlled brake setup, it’s engineered to deliver performance lap after lap.
Universal Flange Fitment
Thanks to its standard flange fitment, this cylinder is a direct bolt-on replacement for many industry favourites including Girling, Wilwood, AP Racing, and Alcon. No modifications are needed — simply unbolt the old one and fit this Upgrade Motorsport CNC master cylinder for instant performance gains.
Dual Use – Brake or Clutch
With a 0.625 inch bore, this master cylinder offers consistent hydraulic performance for both brake and clutch systems. The remote reservoir design allows greater installation flexibility, especially in space-constrained cockpits. It’s perfect for kit cars, track cars, and custom builds.
Key Features:
207g ultra-lightweight CNC billet design
0.625 inch bore size
Push-type operation for fast response
Remote reservoir – ideal for custom setups
Standard Girling / Wilwood / AP / Alcon flange fitment
High-grade anodised aluminium body
Scraper seal to protect against dust and debris
M10x1 fluid inlet and outlet ports
Max stroke: 50mm
Race-tested, track-proven durability
Twin Piston Seal Design – Built to Last
This Upgrade Motorsport master cylinder features a twin piston seal design, enhancing pressure consistency and reducing the risk of fluid bypass or fade under load. This dual-seal system is essential in racing applications where reliability is non-negotiable. Whether used in a clutch pedal system or as part of a bias brake setup, the twin seal configuration delivers confidence-inspiring feedback and longevity.
Superior Value vs Premium Brands
At a fraction of the cost of similar units from AP or Alcon (which often exceed £180), this 0.625 bore master cylinder delivers outstanding value. It matches or exceeds the performance of premium alternatives without breaking your budget.
Final Thoughts
Whether you’re fine-tuning your hydraulic clutch system, refining your pedal box assembly, or building a competitive rally or drift car, the Upgrade Motorsport CNC 0.625” Master Cylinder – Lightweight Performance is a smart investment. Its compact size, reduced weight, and proven reliability make it one of the best brake or clutch master cylinders available today.
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