Titanium Bolt M7×1×24.5 32mm Inner 12point Flange Bolts for Car Wheel hub screws, BBS specific, Pitch 1mm, by Tianswer

Aerospace-grade Ti-6Al-4V Grade 5 titanium M7×1.0mm 12-point flange assembly bolts engineered specifically for restoring, rebuilding, and re-lipping iconic BBS 2-piece and 3-piece modular split wheels.

BBS Multi-Piece Wheel Architecture & Precision Fitment

Rebuilding iconic modular split wheels requires zero-compromise hardware. These precision CNC-machined titanium bolts feature exact OEM BBS thread specifications (M7×1.0mm pitch) with an integrated 12.6mm load-spreading flange and an 8mm 12-point (bi-hex) drive head. Available in standard 24.5mm length (factory fitment for OEM lips and barrels) and extended 32mm length (for stepped lips, thicker custom forged faces, or multi-piece conversions), they guarantee true radial runout and airtight rim barrel sealing.

Unsprung & Rotational Mass Reduction

A complete set of four 3-piece wheels utilizes between 120 and 160 assembly bolts (typically 30 to 40 per wheel). Swapping factory steel bolts for Grade 5 titanium slashes hardware weight by over 45%. Because these fasteners sit at the outer perimeter of the wheel assembly, reducing peripheral rotating mass noticeably decreases rotational inertia, sharpens turn-in responsiveness, and improves suspension dampening compliance over high-frequency road chatter.

Permanent Corrosion Resistance vs. OEM Chrome

Original BBS chrome-plated steel bolts are notorious for flaking, pitting, and rusting from corrosive metallic brake dust and harsh wheel cleaners. Grade 5 Ti-6Al-4V titanium develops a permanent, natural oxide film that will never rust, tarnish, or suffer galvanic pitting, ensuring your restored show wheels retain their pristine mirror or showroom luster season after season.

Key Applications

• Iconic BBS Modular Wheels: BBS RS (e.g., RS001, RS005, RS211), BBS Super RS, BBS LM (Le Mans 2-piece), BBS RC, and BBS RF split wheels.
• Multi-Piece Aftermarket Rebuilds: OZ Racing, Work, SSR, and custom forged 3-piece wheel conversions utilizing M7×1.0 hardware.
• Stepped Lip & Custom Barrel Conversions: 32mm extended length accommodates aftermarket forged outer lips and heavy-duty inner barrels.

Specifications & Dimensions

Material: Certified Aerospace Ti-6Al-4V (TC4) Titanium Alloy, Grade 5
Thread Size: M7
Thread Pitch: 1.0mm
Flange Head Diameter: 12.6mm
Flange Head Height: 6.0mm
Drive Type: 8mm 12-Point (Bi-Hex) Socket
Available Lengths: 24.5mm (Standard BBS Spec), 32mm (Extended Spec)
Available Finishes: Natural Titanium, PVD Vacuum-Coated Gold, Rainbow, Burn Blue, PVD Deep Black

Wheel Assembly & Torque Guidelines

Before assembly, ensure rim mating surfaces and silicone seal channels are immaculately clean. Apply a small drop of medium-strength thread locker or anti-seize paste to the leading threads. Always tighten bolts using an 8mm 12-point socket in a progressive criss-cross star pattern across 3 stages, finishing at 18–22 N·m (13–16 lb-ft) or the wheel manufacturer's specific rebuild torque. Always check torque with a calibrated manual torque wrench. To understand how peripheral rotating mass impacts vehicle performance, read our Titanium Wheel Bolts & Unsprung Weight Guide.

Price is for 1 bolt. (Typically 30 to 40 bolts required per wheel).