Arrow GP2 Dark Slip-On Silencer BMW S1000RR (2017-2018) 71538GPI

The Arrow GP2 Dark slip-on silencer for the BMW S1000RR (2017-2018) delivers a satisfying blend of road legality, weight reduction and aggressive dark stainless steel aesthetics — all in a fitment that bolts straight on without modification. Part number 71538GPI is engineered specifically for the 2017 and 2018 S1000RR, so every bracket, inlet diameter and mounting point aligns perfectly from the moment you unpack it.

Key Features

• Road-legal E-number approval — fully compliant for everyday street use straight out of the box.
• Dark stainless steel canister body with stainless steel end cap delivers a purposeful, race-inspired look that suits the S1000RR's sharp lines.
• Full stainless steel internals ensure long-term corrosion resistance and heat stability under sustained hard riding.
• Removable dB killer included — leave it in for commuting, pull it out for a more open, GP-inspired exhaust note on track days.
• Meaningful weight saving over the stock silencer, contributing to improved handling and mass centralisation.
• Plug-and-play installation — designed to mate directly with the OEM header or an Arrow header for a complete Arrow system.

Build Quality and Performance

Arrow's GP2 series sits at the intersection of genuine engineering and visual drama. The dark-treated stainless steel finish on the 71538GPI is not a paint or coating that will flake or discolour under heat — it is a thermally stable treatment that maintains its appearance across high exhaust temperatures. The all-stainless construction, from the inlet cone through to the end cap, means there is no weak link prone to rust or fatigue, even when the bike is used throughout winter or in wet climates.

The removable dB killer is a practical detail that many riders will appreciate on a machine like the S1000RR. On the road the insert keeps sound levels within legal limits; removed for a trackday, it opens the exhaust note into something far more consistent with the bike's character. Arrow's internal packing and baffle geometry are tuned to complement the S1000RR's inline-four, and for those seeking the last word in throttle response and peak power, Arrow recommends a dedicated ECU remap to fully exploit the freer-flowing exhaust path.

Expanding to a Full System

The 71538GPI slip-on is designed to accept a compatible Arrow header, allowing owners to step up to a complete Arrow exhaust system at any point. Running the full system unlocks the greatest gains in throttle response and top-end performance, while keeping the visual and tonal consistency of a single manufacturer's design throughout the exhaust path.

Fitment and Compatibility

This slip-on silencer fits the following motorcycle:

• BMW S1000RR — model years 2017 and 2018

Compatible with both the original BMW header and a matching Arrow header pipe. Plug-and-play fitment; no cutting, welding or custom brackets required.

Specifications