Reverse Components Rear Boost Hub Adapter Kit - 142x12mm to 148x12mm Conversion Hardware

Adapt your high-end wheelset to modern frame specifications without the massive expense of buying a new wheel or rebuilding your hub using the Reverse Components Rear Boost Hub Adapter Kit. Finished in a clean anodized black, this high-precision hardware kit is engineered to expand a classic 142x12mm rear thru-axle hub to the modern 148x12mm Boost frame standard. By bridging the structural spacing gap seamlessly, this kit provides a highly reliable, cost-effective mechanical solution for mountain bikers upgrading their frames while preserving their favorite premium wheels.

The kit contains all the specific componentry required to handle the displacement of both the frame dropouts and the braking alignment. To widen the axle track accurately, the kit provides two 3mm axle end cap spacers that slot onto either side of the hub. To ensure your braking configuration tracks perfectly centered inside the brake caliper, it incorporates a **3mm disc rotor adapter plate** that moves the rotor outward to the proper Boost offset line. The assembly is rounded out with **6 extended brake disc bolts (M5x15mm)** to guarantee deep, secure thread engagement into the hub shell when securing the spaced rotor.

Crafted to strict structural tolerances, the spacers are machined from premium **high-strength aluminum**, ensuring absolute rigidity under intense torque loads and harsh braking forces. The entire conversion kit adds minimal weight to your rolling stock, coming in at a lightweight **23g for the pair** (+/- 5% factory weight tolerance). Retain your wheel configuration, maintain precise shifting and braking tracking, and bridge the axle standards effortlessly with this premium hardware kit.

Key Features

• 142mm to 148mm Boost Conversion: Precision-matched hardware set expands standard 142x12mm thru-axle hubs to fit 148x12mm Boost spacing frames cleanly


• Complete Spacer Sub-Assembly: Includes two 3mm axle widening spacers and a matching 3mm disc rotor offset adapter plate


• Extended Rotor Hardware: Suppled with 6 long M5x15mm steel brake disc bolts to ensure safe, secure thread engagement with the hub shell


• Rigid Aluminum Construction: Machined from high-quality aluminum to deliver excellent durability and unyielding alignment stability under heavy braking


• Ultra-Lightweight Profile: Adds negligible mass to your wheel assembly, weighing a lean 23g total (+/- 5% weight tolerance)

Specifications

• Brand: Reverse Components


• Product Type: Rear Hub Boost Adapter Kit


• Conversion Spacing Range: 142x12mm Hub to 148x12mm Frame (Rear Only)


• Axle Spacers: 2x 3mm Hub End Cap Washers


• Brake Rotor Spacer: 1x 3mm Hub Disc Rotor Adapter Plate


• Fastener Hardware: 6x Extended Brake Disc Bolts (M5 x 15mm)


• Material Fabrication: High-Strength Structural Aluminum


• Component Weight: 23g (Pair System Weight, +/- 5% Tolerance)