HOTCHECK S-Grade Titanium Front Flat Mount Brake Caliper Adapter Kit – 60 mm / 70 mm

Precision Where It Matters.

One precision-engineered titanium brake adaptor. A complete set of matching titanium mounting hardware.

The HOTCHECK S-Grade Titanium Front Flat Mount Brake Caliper Adapter Kit brings an exceptional level of engineering, machining detail and material quality to one of the most functional components of a performance road bike.

More than a conventional brake adaptor, this meticulously machined assembly brings together HOTCHECK's distinctive design philosophy and a complete selection of titanium mounting hardware.

Manufactured from HOTCHECK S-Grade Titanium Alloy, with material originating from BAOTI Group and sourced through specialist suppliers in Baoji, China, the adaptor features an intricately sculpted profile, refined surfaces and carefully considered geometry.

Every detail reflects HOTCHECK's commitment to precision. From the finely executed machining to the matching titanium countersunk bolts, fixing bolts and washers, each component has been developed with attention to both mechanical function and aesthetics.

Available in two dedicated mounting configurations — 60 mm and 70 mm — to accommodate different front flat mount brake systems.

Performance is the baseline. Aesthetics is the obsession.

One Complete Titanium Mounting Kit.

The HOTCHECK front brake adaptor is supplied as a complete titanium assembly, not simply the adaptor on its own.

Each kit includes:

• 1 × S-Grade Titanium Front Brake Caliper Adaptor

• 2 × Titanium Countersunk Bolts — M5 × 9.5 mm

• 2 × Titanium Fixing Bolts — M5 × 12 mm

• 2 × Titanium Washers — Ø11 × 1.2 mm

Seven precision-engineered titanium components. One complete mounting kit.

Two Configurations. Purpose-Built Fitment.

60 mm — Specialized / Cervélo

Designed for the 60 mm front flat mount configuration used on selected performance road frames and forks.

HOTCHECK confirms compatibility with:

• Specialized Tarmac SL8

• Specialized Tarmac SL9

• Specialized Aethos (original generation)

• Cervélo S5 (2026)

Adaptor weight: 6.9 g

70 mm — Standard Flat Mount

Designed for compatible front flat mount systems using the industry-standard 70 mm mounting-hole spacing.

Suitable for compatible applications across manufacturers including Colnago, Trek, Factor, Giant and Merida, subject to the individual fork and brake configuration.

Adaptor weight: 7.9 g

Engineering Highlights

• HOTCHECK S-Grade Titanium Alloy — High-strength titanium material originating from BAOTI Group, sourced through specialist suppliers in Baoji, China.

• Precision CNC Manufacturing — Intricately machined geometry, carefully defined edges and sculpted surfaces demonstrate HOTCHECK's meticulous approach to component manufacturing.

• Complete Titanium Hardware — Supplied with matching titanium countersunk bolts, fixing bolts and washers.

• Two Dedicated Fitments — Available in 60 mm and 70 mm mounting configurations.

• Considered Lightweight Design — Adaptor weights of just 6.9 g and 7.9 g respectively.

• Exacting Manufacturing Standards — HOTCHECK specifies tolerances as tight as ±0.01 mm for assembly-critical features across its manufacturing processes.

• Refined Titanium Finish — A distinctive precision-machined aesthetic designed to complement premium road bike builds.

Technical Specifications

Weights are manufacturer-stated and refer to the adaptor itself, excluding the supplied mounting hardware.

Compatibility & Fitment

Please select the correct adaptor based on your fork's mounting-hole spacing and brake configuration.

60 mm Version

Confirmed by HOTCHECK for the Specialized Tarmac SL8, Tarmac SL9, original Aethos and 2026 Cervélo S5.

Compatibility with other Specialized generations, including the Tarmac SL7 and Aethos 2, has not been confirmed.

70 mm Version

Designed for standard front flat mount fork arrangements with 70 mm fixing-hole spacing.

Compatibility must be checked against the individual fork and brake configuration rather than the bicycle manufacturer alone.

**Important: Confirm your brake rotor size, fork mounting standard and required hardware before installation.**

Engineering Without Compromise.

At HOTCHECK, even the smallest mechanical interface deserves the same attention to detail as the most prominent component on the bicycle.

From material selection and precision machining to the final machined surface, every detail reflects a belief that exceptional engineering and distinctive aesthetics should exist together.

HOTCHECK — Titanium Modding Masters.