Box One Mini 85mm Brake Caliper

Product Overview

The Box One Eclipse Mini is an 85mm linear-pull brake caliper designed for BMX racing and cyclocross applications. Cold forged and CNC-machined from 6061-T6 aluminum, it provides 35mm of vertical brake pad adjustment with sealed bearing pivots for smooth modulation. Features titanium and stainless steel hardware for corrosion resistance and reduced weight.

Key Features

• Cold forged and CNC-machined construction - Forging process compresses aluminum grain structure for maximum strength and stiffness, followed by CNC machining for precise tolerances and weight reduction

• Sealed bearing pivots - Cartridge bearings at pivot points reduce friction for smooth lever feel and consistent braking performance while protecting internals from contamination

• 35mm vertical pad adjustment - Extended adjustment range accommodates different rim widths and allows precise pad positioning for even wear and consistent braking

• Titanium and stainless hardware - Corrosion-resistant fasteners reduce weight compared to steel while maintaining long-term durability

• Flexible cable noodle - Articulating noodle reduces cable friction and allows smooth cable routing through the brake arm

• Streamlined cable fixing point - Simplified cable attachment mechanism improves cable clamping security and reduces setup complexity

Technical Specifications

• Weight: 189 g (6.7 oz per brake)
• Material: 6061-T6 aluminum (arms), titanium and stainless steel (hardware)
• Brake type: Linear-pull (V-brake)
• Arm length: 85mm (Mini-V)
• Brake size category: Mini
• Vertical pad adjustment: 35mm
• Pivot type: Sealed bearing
• Cable compatibility: Linear-pull-compatible brake levers

Compatibility and Ideal Use Cases

Designed for BMX race bikes, cyclocross bikes, and drop-bar gravel bikes using linear-pull (V-brake) compatible levers. The 85mm arm length provides adequate stopping power with drop-bar levers that have less cable pull than mountain bike levers. Mounts to standard linear-pull brake bosses on frame or fork. Best suited for competitive BMX racing where lightweight, modular braking is required, or for cyclocross and gravel applications needing reliable rim braking with drop-bar lever compatibility. Not compatible with cantilever brake levers, road caliper brake levers, or disc brake systems.

Shipping is often faster, but some items like this one can take 1–3 weeks to ship.