Fullsix Carbon Fuel Tank BMW S1000RR K46 (2009-2018) – Autoclave-Cured, Race-Grade

Few components embody motorsport heritage quite like a Fullsix carbon fuel tank. Hand-finished in Italy and autoclave-cured from pure carbon fibre with zero mixed-fibre compromise, this one-piece tank for the BMW S1000RR K46 (2009-2018) is a statement of intent — the same uncompromising construction philosophy that underpins top-level racing programmes, now available as a direct OEM replacement for the road-to-track conversion your S1000RR deserves. For track use only; not road-legal.

Key Features

• 100% autoclave-cured carbon fibre construction — no mixed fibres, no fillers, no shortcuts
• One-piece design eliminates seams and the associated leak risk found in multi-part alternatives
• Significant weight reduction over the standard metal OEM tank, improving acceleration and weight distribution
• Plug-and-play fitment: direct replacement for the BMW S1000RR K46 factory tank with no modification required
• UV-stable, weather-resistant finish — resists yellowing and material fatigue over time
• Available in two weave patterns and two surface finishes to suit your aesthetic — glossy or matte, 200 Plain or 245 Twill

Design, Finish and Heritage

Fullsix has built its reputation on one principle: carbon fibre components that are indistinguishable from race-shop fabrication in both finish and structural integrity. The fuel tank exemplifies this. The 200 Plain weave delivers a refined, uniform surface that mirrors the clean visual language of the BMW S1000RR's production bodywork — restrained, purposeful and deeply satisfying up close. The 245 Twill weave introduces a more dynamic, diagonal lattice with greater visual depth, the pattern long associated with outright racing machinery and a favourite among riders who want their build to read as something altogether more serious.

Both patterns are available in a high-gloss lacquer that catches light and amplifies the carbon's natural lustre, or in a satin matte coat that gives the bike a raw, circuit-ready aggression without any unwanted reflection under paddock lighting. Whichever combination you select, the finish is applied with the same exacting standards Fullsix applies across its entire product line.

Construction and Performance

The autoclave curing process — the same technique used in aerospace and Formula 1 — produces a carbon structure with maximum fibre consolidation and minimal void content. This translates directly into a tank that is dramatically lighter than the original steel or aluminium OEM unit whilst offering exceptional rigidity. The reduction in unsprung and centrally-mounted mass improves the S1000RR's already razor-sharp handling response and reduces the rotational inertia that the engine has to overcome during rapid direction changes on circuit.

The one-piece moulding is a deliberate engineering choice. By eliminating bonded or welded seams — potential weak points in any fuel-carrying component — Fullsix delivers structural continuity and a leak risk that is as close to zero as composite manufacturing allows. The surface is sealed against UV degradation, so the finish remains stable even after extended exposure to paddock conditions, fuel vapour and temperature cycling.

Available Variants and Part Numbers

200 Plain Carbon

The uniform plain weave pattern echoes the production aesthetic of the BMW S1000RR. Available in:

• Glossy — MB-RR12-C49
• Matte — MB-RR12-M49

245 Twill Carbon

The diagonal twill weave delivers a deeper, more intricate visual structure associated with outright racing builds. Available in:

• Glossy — MB-RR12-TC49
• Matte — MB-RR12-TM49

Fitment and Compatibility

This Fullsix carbon fuel tank is engineered exclusively for the BMW S1000RR K46, covering all model years from 2009 through to 2018. It is a direct plug-and-play replacement for the OEM fuel tank — no modification, cutting or adapting is required. Please note: this component is a motorsport article and carries no road homologation. It is intended solely for closed-circuit competition use.

Specifications

• Brand: Fullsix
• Part numbers: MB-RR12-C49 (Plain Glossy), MB-RR12-M49 (Plain Matte), MB-RR12-TC49 (Twill Glossy), MB-RR12-TM49 (Twill Matte)
• Material: 100% autoclave-cured carbon fibre
• Construction: One-piece moulding
• Available weaves: 200 Plain, 245 Twill
• Available finishes: Glossy, Matte
• Fitment: BMW S1000RR K46, 2009-2018
• Road legal: No — track/motorsport use only