What this product does A disc brake conversion adapter that lets you fit a disc brake caliper to a bike frame or fork that does not have a dedicated disc brake mount. It provides a simple way to add disc braking capability where no disc seat exists. Please ensure compatibility with your frame, fork, rotor size and caliper before . Key benefits Easy installation: designed for straightforward mounting and alignment so you can add disc brakes without major frame modification. Durable construction: made from aluminum alloy for corrosion resistance and longlasting service. Low weight and small footprint: at approximately 120 x 51 x 44 mm and about 130 g, it adds minimal weight and bulk to the bike. Color choices: available in black, red, gold, and silver to match your bike or style. Important specifications Material: aluminum alloy for strength and durability Dimensions: approx. 120 x 51 x 44 mm Weight: approx. 130 g Finish: black, red, gold, silver Compatibility: intended for bikes without a disc brake seat; verify rotor diameter, caliper type (mechanical or hydraulic) and mounting geometry before Why customers need it Upgrade older bikes or frames that lack disc mounts to improve braking performance, especially in wet or muddy conditions. Avoid costly frame replacement or welding by using a bolton adapter to fit modern disc calipers. Keep bike weight and looks minimal while gaining the benefits of disc brakes. Practical use scenarios 1. Converting an older commuter or city bike that only has rim brakes so you can fit a mechanical or hydraulic disc caliper for better stopping in wet weather. 2. Upgrading a custom or DIY build where the frame or fork does not include a disc mount, enabling use of modern disc brake components without frame modification. 3. Temporarily fitting a disc brake to a bike for a specific ride or season (for example, winter commuting) and removing it later if needed. Notes and installation tips Check clearances for rotor size and wheel hub before installation. Confirm that your chosen caliper bolts and rotor align with the adapter mounting holes. Tighten fasteners to manufacturer torque settings and verify caliper alignment during initial test rides. This adapter provides a compact, lightweight, and durable solution to add disc brake functionality to bikes that lack a builtin disc brake seat. Ensure compatibility prior to for a reliable, safe installation.