The Enduro Bearings BBA-001 Aluminum Preload Adjuster is a premium CNC-machined upgrade designed to replace flimsy plastic rings, delivering precise bearing preloading for 29mm SRAM DUB and 30mm spindles.

The Enduro Bearings Aluminum Bottom Bracket Preload Adjuster (BBA-001) is a high-grade, precision-engineered upgrade designed to permanently solve one of modern cycling’s most annoying drivetrain headaches. Many premium cranksets rely on cheap, flexible plastic preload rings that are notorious for backing off, stripping their tiny threads, or cracking mid-ride. This all-aluminium, CNC-machined masterpiece replaces that weak link, giving you a bombproof solution that ensures your bottom bracket bearings remain perfectly preloaded, completely free of play, and completely silent.

Engineered with versatility in mind, the Enduro design completely eliminates the gluing, modifications, or guesswork often required by lesser aftermarket adjusters. Every kit comes complete with two separate threaded inner rings—one precisely sized for 29mm SRAM DUB spindles and one for traditional 30mm spindles. The magic lies in Enduro's unique silicone oval-ring design (colour-coded red for DUB/29mm and blue for 30mm), which friction-locks the inner ring firmly onto your spindle while you spin the outer ring. This allows you to effortlessly dial out micro-play and set the perfect preload on your angular contact (A/C) or radial bearings. Once dialed in, a recessed 2mm hex bolt clamps the assembly down for an immovable, slip-free interface that prolongs bearing life and preserves your precious watts.

Key Features

• Precision CNC-Machined Aluminium: Cut from high-strength aluminium billet to deliver maximum structural integrity and eliminate the flexing common in OEM plastic adjusters.

• Dual-Spindle Compatibility: Includes two custom-engineered inner threaded rings to effortlessly fit both 29mm SRAM DUB and standard 30mm crankset spindles.

• Innovative Silicone Oval-Ring: Features a proprietary inner silicone ring that stabilizes the assembly during adjustment, making tool-free hand preloading quick and predictable.

• Recessed 2mm Clamping Hex Bolt: Utilizes a secure, flush-fitting hex pinch bolt to firmly clamp the adjuster into position, eliminating the risk of thread stripping or backing off.

• Extended Bearing Longevity: Allows for incredibly minute adjustments to eliminate bottom bracket play, ensuring optimal load distribution across your bearing races.

Specifications

• Brand: Enduro Bearings

• Model: BBA-001

• Material: CNC-machined 6061 aluminium (adjuster rings), premium silicone (oval-rings)

• Spindle Compatibility: 29mm (SRAM DUB) and 30mm diameter spindles

• Hardware: Recessed 2mm Allen/hex pinch bolt

• Colour-Coding: Red silicone ring (29mm/DUB), Blue silicone ring (30mm)

• Crank Arm Requirement: Designed for cranksets without integrated threads built directly into the crank arm face

✅ Why This IS For You