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The HEL Master Cylinder Reservoir Seal & Spigot Kit (45° and 90°) is the essential finishing touch for any HEL Performance master cylinder setup. Designed for riders and builders who demand precision fluid routing, leak-free reliability, and race-proven engineering, these genuine HEL components deliver the perfect interface between your reservoir pot and master cylinder.
Each kit includes HEL’s 45-degree and 90-degree seal and spigot assemblies, offering flexibility for any custom brake or clutch setup — whether you need a tight angled connection for compact bar layouts or a smoother flow for horizontal reservoir positioning. Manufactured to the same standards as HEL’s flagship master cylinders, these fittings guarantee precision fitment, optimal fluid transfer, and long-term durability even under racing conditions.
Key Features
Genuine HEL Performance seal and spigot fittings (45° and 90° options included)
Engineered for exact fitment with HEL master cylinders — part numbers HMC-RES-SPIGOT45 and HMC-RES-SPIGOT90
CNC-machined aluminium construction ensures precise sealing and lasting strength
Optimised fluid flow design prevents turbulence and maintains consistent pressure
Perfect for race, track, and high-performance street builds
Compatible with HEL Billet Reservoir Pots and HEL Master Cylinders
Anodised finish resists corrosion and fluid degradation
Fitment & Installation
This kit is designed for universal use with HEL Performance master cylinders and reservoir assemblies. Choose between the 45° or 90° fitting depending on your motorcycle’s handlebar layout and space requirements.
For exact compatibility and setup guidance, visit:
HEL Performance Fitment & Installation Guide
Detailed product references:
HEL 45° Seal & Spigot
HEL 90° Seal & Spigot
Always ensure the seal is seated cleanly, apply the correct torque, and bleed your hydraulic system after installation for optimal performance.
Why Choose HEL Performance
HEL Performance is a world-leading manufacturer of precision-engineered brake and clutch components, proudly designed and produced in the UK. Trusted by MotoGP, WSBK, and Isle of Man TT teams, every HEL product reflects an unwavering commitment to engineering accuracy, performance, and reliability.