Position One Disc Brake Kit

Position One Disc Brake Kit

Product Overview

The Position One Radius is a hydraulic disc brake system engineered for BMX racing. Featuring a 2-piston metal caliper with adjustable 2-finger lever, it delivers responsive braking power optimized for BMX requirements. Pre-bled and ready to use, it's compatible with 120mm and 140mm rotors and available in three hose lengths.

Key Features

• Enhanced Braking Power – Hydraulic system delivers stopping power optimized for BMX racing demands
• 2-Piston Metal Caliper – Dual-piston design provides responsive, reliable braking performance
• Quick Stopping Power – Immediate brake response ideal for racing gate starts and technical riding
• Adjustable Brake Lever – 2-finger lever reach manually adjustable for comfortable operation across hand sizes
• Wide Lever Reach Range – Perfect for both large and small hands; personalized comfort and control
• Hinged Clamp Design – Installs without removing handlebar grips; simplified installation
• Metal Brake Pads – Durable metallic compound provides reliable braking and extended pad life
• Dual Rotor Compatibility – Works with both 120mm and 140mm disc rotors
• Two Way Bleeding – Easy maintenance and air removal from brake system
• Pre-Bled System – Lever and caliper arrive pre-bled and ready for immediate use
• Multiple Hose Length Options – Available in 1300mm, 1400mm, or 1450mm for frame size and routing flexibility
• Mineral Oil Hydraulic Fluid – Standard BMX brake fluid compatible with common brake systems
• Professional Racing Component – Purpose-built for competitive BMX racing applications

Technical Specifications

• Brake type: Hydraulic disc brake system
• Caliper: 2-piston metal design
• Lever: 2-finger with adjustable reach
• Mount type: Post mount
• Rotor compatibility: 120mm and 140mm
• Hose lengths: 1300mm, 1400mm, or 1450mm
• Hose type: SM-BH59-SS (Shimano and Elevn compatible)
• Pad compatibility: B01S resin pads (Shimano and Elevn compatible)
• Fluid: Mineral oil
• Piston material: Metal
• Pad material: Metal compound
• Installation: Hinged clamp (no grip removal required)
• Pre-bled: Yes, ready for immediate use

Compatibility & Ideal Use Cases

• Post-Mount Disc Brake Frames – Compatible with frames featuring post-mount caliper bosses
• 120mm Rotor Wheels – Works with standard 120mm centerlock or ISO disc rotors
• 140mm Rotor Wheels – Compatible with larger 140mm rotors for increased braking power
• BMX Racing – Engineered specifically for competitive BMX racing applications
• Adjustable Reach – Suitable for riders with varying hand sizes and reach requirements
• Shimano Rotor/Pad Systems – Compatible with Shimano B01S resin pads and SM-BH59-SS hoses
• Elevn Component Integration – Works with Elevn brake components for modular systems
• Multiple Frame Sizes – Three hose length options accommodate different frame geometries
• Professional Racing – Purpose-built for serious BMX racing applications

Build Requirements & Compatibility

• Post-Mount Caliper Boss – Frame must have post-mount disc brake caliper mounting boss
• Rotor Selection – Choose 120mm or 140mm rotor based on your wheel and desired braking power
• Hose Length Selection – Select from 1300mm, 1400mm, or 1450mm based on your frame geometry
• Handlebar Compatibility – Verify handlebar diameter accommodates lever clamp (standard 22.2mm)
• Wheel Rotor Mount – Verify your wheel has centerlock or ISO rotor mounting compatible with your rotor
• Brake Pad Replacement – B01S resin pads (Shimano and Elevn compatible) for pad maintenance

Important Notes

• Pre-bled and ready to use; no initial bleeding required
• Hinged clamp design simplifies installation without removing grips
• Adjustable lever reach accommodates wide range of hand sizes
• Metal pads provide durable braking performance
• Two-way bleeding system simplifies maintenance and air removal
• Mineral oil hydraulic fluid compatible with standard BMX brake systems
• Hose length critical for proper routing; select based on frame geometry
• Post-mount caliper installation requires proper alignment and torque specification
• Metal pads may produce more brake noise than resin compounds
• Pad compatibility: B01S resin (Shimano and Elevn); verify pad type for replacements
• Hose compatibility: SM-BH59-SS standard for Shimano and Elevn systems
• Professional-grade hydraulic system suitable for competitive racing
• Regular maintenance recommended: inspect pads, check fluid level, bleed if needed
• Mineral oil is hygroscopic; avoid contamination during maintenance