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Installation & Safety Notice – Radial-Caliper Conversion Brackets (100 mm) for Triumph Bobber
Installation & Safety Notice — CNC-Billet 6061 T6 Radial-Caliper Bracket Kit
Triumph Bobber 2017-2025 • 49 mm fork • Fits 100 mm radial calipers (Brembo M50/M40, RXC billet, etc.)
This kit replaces the OEM axial brackets with billet adapters that accept 4-piston 100 mm radial calipers. Brake-system rules, defect-reporting duties and insurance requirements differ worldwide — review the table below before riding on public roads.
| Region | Key Rules | Your Checklist |
|---|---|---|
| USA | FMVSS 122 motorcycle brake system + NHTSA defect reporting 49 CFR 579 | You must maintain or improve OEM stopping distance. Keep a copy of the pressure-bleed & pad bedding data for 5 yrs. File form if defect discovered; keep lot/serial traceability. |
| EU / UK | Reg. (EU) 168/2013 & UNECE R78 (+ MOT) | Radial swap allowed if braking force ≥ type-approval and ABS remains functional. Perform a “roller brake test” or TÜV Einzelabnahme; keep certificate with V5/MOT docs. |
| Australia / NZ | ADR 33/00 motorcycle brakes + VSB 14 Mod Code LO1 | Engineering sign-off required after major brake modification. Supply caliper piston area change & master-cyl ratio to engineer. |
Universal Fitting Instructions
- Support bike securely; remove front wheel & OEM axial calipers.
- Unbolt OEM brackets from fork legs (2 × M8). Clean threads.
- Install REMMOTORCYCLE billet brackets with supplied M8 × 35 grade 12.9 bolts; torque 35 N·m (26 lbf·ft) and apply Loctite 243.
- Mount 100 mm radial calipers; torque caliper bolts to 45 N·m (33 lbf·ft) (Brembo spec).
- Re-fit wheel, align discs; verify rotor runs central in caliper window (shim if needed).
- Bleed system; squeeze lever overnight with zip-tie; check for leaks.
- Bed new pads: 6 × 60→10 mph stops; allow cool-down.
- After 50 km/30 mi re-torque all bolts and inspect for pad rub.
Hydraulics & Master-Cylinder Sizing
- For dual 30/34 mm 4-pot calipers use a 17–19 mm radial master for street feel (Brembo RCS 17). Oversize masters give hard lever & poor modulation.
- ABS remains functional — lines route exactly as OEM; do not twist hoses.
⚠️ Incorrect torque, hose routing or mismatched master-cylinder size can cause brake failure, serious injury or death. Professional installation strongly recommended.
⚠️ California Proposition 65: This product can expose you to chemicals including aluminium dust and machining oil residues. More information: P65Warnings.ca.gov.