Arrow Indy Race Slip-On Silencer + Cat Replacement Pipe Yamaha YZF-R1/M (2017-2026) 71179HKR

Engineered exclusively for the Yamaha YZF-R1/M across model years 2017 to 2026, the Arrow Indy Race slip-on silencer kit 71179HKR pairs a full titanium construction with a catalytic converter replacement pipe to deliver sharper throttle response, a genuine power increase, and a weight saving that is immediately felt on every lap. Whether you are chasing consistent lap times or simply extracting everything the R1 platform has to offer on track, this kit is built to go the distance.

Key Features

• Full titanium construction throughout — silencer body, end cap internals, and mid-pipe — combining exceptional heat resistance with a weight penalty so low it stays out of your way all session long.
• Carbon end cap gives a purposeful, race-bred aesthetic that holds up under the sustained heat cycles of track use.
• Catalytic converter replacement pipe removes a restrictive section of the standard exhaust path, freeing up exhaust flow and contributing directly to the performance and throttle response gains.
• Removable db killer included, allowing you to tailor sound output to circuit regulations or personal preference without tools.
• Dedicated fitment for Yamaha YZF-R1 and YZF-R1M (2017–2026) — a direct slip-on installation that requires no cutting or custom fabrication.
• ECU remapping is recommended to unlock the full performance potential and ensure long-term reliability in conjunction with the open exhaust path.

Construction & Performance

Arrow's Indy Race range sits at the sharper end of their track-focused catalogue. Every component in kit 71179HKR is produced in titanium — not just the outer shell but the internal mid-pipe and the silencer internals as well. Titanium's combination of very high tensile strength, low density, and resistance to the oxidation that comes with sustained high exhaust temperatures makes it the material of choice for serious track machinery. The carbon end cap adds a further layer of heat management at the exit point while contributing to the visual signature that distinguishes the Indy Race from street-oriented Arrow lines.

The inclusion of a catalytic converter replacement pipe is a critical part of this kit's performance story. The standard catalytic section introduces back-pressure and thermal mass into the exhaust path; removing it with a purpose-built titanium substitute straightens the flow and lowers exhaust gas temperatures at the silencer inlet, which in turn supports the throttle response improvements riders notice most at the mid-range RPM the R1 spends most of its time in on circuit.

Track Use & ECU Mapping

The 71179HKR is designated for race use only and is not road-legal. Arrow and Inter-Pace both recommend a dedicated ECU remap following installation. The standard fuel map is calibrated around the restriction of the OEM exhaust; once that restriction is removed, a custom map ensures fuelling stays accurate across the rev range, protecting the engine and delivering the consistent, predictable power delivery that matters most when you are focused on the track.

Fitment & Compatibility

This kit is a direct-fit slip-on for the following motorcycles:

• Yamaha YZF-R1 (2017–2026)
• Yamaha YZF-R1M (2017–2026)

Specifications

• Part number: 71179HKR
• Brand: Arrow
• Type: Slip-on silencer kit with cat replacement pipe
• Silencer material: Titanium
• End cap material: Carbon
• Mid-pipe material: Titanium
• Silencer internals: Titanium
• Db killer: Included
• Approval: Race use only
• ECU remap: Recommended
• Fitment: Yamaha YZF-R1 / R1M (2017–2026)