Austin Racing GP3 Slip-On (GP1R/V3) + De-Cat Replacement Pipe – BMW S1000RR K67 (2019-2026)

Built entirely from full titanium and crafted in England, the Austin Racing GP3 ARCS De-Cat system represents the pinnacle of race exhaust engineering for the BMW S1000RR K67. Every component — from the header to the silencer sleeve — reflects Austin Racing's obsession with material quality, longevity under extreme heat, and unrestricted exhaust flow. This is a system designed and constructed to perform at the limit, session after session.

Key Features

• Full titanium construction throughout — exceptional heat resistance, dramatically reduced weight and a finish that ages gracefully under track conditions
• De-cat replacement pipe removes the catalytic converter to deliver unrestricted exhaust flow and unlock the engine's full potential
• Choice of GP1R (60 mm outlet) or V3 (150 mm or 200 mm can) silencer bodies to suit your sound and power preferences
• Internal baffling technology allows volume adjustment — genuinely configurable track noise levels
• Compatible with pillion footpegs, so your machine remains versatile between track days and road use
• Three logo finish options — standard sticker, laser engraved, or colour laser engraved — for a personalised, race-quality appearance

Construction and Materials

Austin Racing builds this system to a standard that justifies its provenance. The header is a full titanium fabrication — not a titanium-coated steel item — which keeps mass at the front of the exhaust to a minimum while handling the intense thermal cycling of repeated track use without warping or discolouration beyond the characteristic titanium patina. The GP1R silencer pairs a titanium body with a carbon sleeve, while the V3 is available in either titanium or black ceramic finish, both chosen for their resistance to the sustained heat generated at race RPM.

The de-cat replacement pipe is a direct substitute for the original catalytic converter section, maintaining the correct fitment geometry while opening up flow that the standard unit restricts. Unlike universal de-cat solutions, this is an Austin Racing-specified piece engineered to integrate with the GP3 header and silencer without compromise.

Silencer Options in Detail

GP1R Silencer

The GP1R uses a 60 mm end outlet and is available in black or titanium finish. The carbon sleeve adds a further weight saving over a metal-bodied unit and provides the visual identity most closely associated with Austin Racing's competition-derived catalogue.

V3 Silencer

The V3 offers a choice of 150 mm or 200 mm canister sizes in black ceramic or titanium. The larger format gives a deeper, more authoritative exhaust note while the black ceramic finish provides a durable, heat-stable surface that stands up to repeated track days without fading.

Sound Performance

Both silencer options use Austin Racing's internal baffling technology, which allows the rider to adjust the output volume to suit circuit noise regulations or personal preference. Measured dB values at 5,500 RPM for both the GP1R and V3 are to be confirmed — contact Inter-Pace for the latest figures before purchase if noise compliance is a factor for your circuit.

Installation Notes

Fitting the GP3 system to the S1000RR K67 requires cutting the original exhaust system to accommodate the new header section. This is a permanent modification and should be carried out by a competent mechanic familiar with the BMW exhaust architecture. A servo eliminator (SERVO-PLUG) is required to prevent electronic fault codes from appearing on the dashboard once the de-cat pipe is installed — this item is not included and must be sourced separately. To realise the full performance gain from this system, an ECU race map or Power Commander (PCV) fuel map is strongly recommended; the de-cat and improved flow characteristics demand a corresponding fuelling correction for optimal torque delivery and throttle response.

This exhaust system is intended exclusively for closed-circuit, track use and is not road-legal. It must not be used on public roads.

Fitment and Compatibility

• BMW S1000RR — model code K67, model years 2019 to 2026

Specifications