
The facts.
| Brand | Arrow |
|---|---|
| Part Number | 71829AKN |
| Type | Slip-on silencer |
| Silencer Material | Aluminium Dark |
| Internal Components | Stainless steel |
| End Cap | Carbon |
| Weight | 1.93 kg |
| Silencer Length | 250 mm |
| Outlet Diameter | 58 mm |
| Inlet Diameter | 55 mm |
DescriptionThe whole story▼
Carrying full E-mark type approval for unrestricted road use, the Arrow Indy-Race 71829AKN is an aluminium slip-on silencer engineered specifically for the Yamaha YZF-R1 and YZF-R1M (2017–2026). At just 1.93 kg it strips meaningful mass from the tail section while sharpening throttle response and unlocking a genuine step in mid-to-top-end performance — all without sacrificing the legal certification that keeps you on public roads.
Key Features
- E-mark type approval included: road-legal straight out of the box, no exemptions or paperwork required.
- Removable DB-Killer supplied: run it open on track for maximum sound, refitted on the road to stay within noise limits.
- Aluminium Dark silencer body keeps weight to just 1.93 kg, reducing unsprung and tail mass for sharper handling.
- Stainless steel internals resist heat cycling and corrosion across a full season of hard riding.
- Carbon end cap delivers a motorsport aesthetic that complements the R1/M's aggressive bodywork.
- Slip-on fitment designed to mate directly with the OEM header — or upgrade to an Arrow header for a full performance system.
Performance & Build Quality
Arrow designed the Indy-Race range to satisfy riders who want genuine, measurable gains without dismantling the bike's everyday usability. The 55 mm inlet and 58 mm outlet diameters are optimised for the YZF-R1's exhaust gas flow at high rpm, improving scavenging and translating directly into more responsive throttle pickup. The dark-anodised aluminium canister is both a visual statement and a functional choice: it runs cooler to the touch than bare metal and resists the kerb-side knocks that track days inevitably bring. Arrow's recommendation to run a custom ECU map when fitting this silencer is worth following — the fuelling calibration that comes with the stock exhaust is no longer optimal once the back pressure changes, and a remap will unlock the full performance benefit.
Road & Track Use
The E-mark approval is the defining credential of this particular Arrow variant. Where comparable slip-ons require you to refit a standard silencer for the MOT or technical inspection, the 71829AKN passes as fitted. The included DB-Killer makes the transition between road and track straightforward: remove it in the paddock, replace it before heading home. For riders who want to extend the system further, the Indy-Race canister is fully compatible with Arrow's own YZF-R1/M headers, creating a matched full-system exhaust with a single mid-pipe junction.
Fitment & Compatibility
This slip-on silencer fits the following models:
- Yamaha YZF-R1 — model years 2017 to 2026
- Yamaha YZF-R1M — model years 2017 to 2026
Slip-on installation uses the OEM header connection point. Can be paired with an Arrow header to form a complete exhaust system. A dedicated ECU remap is recommended for optimal performance after fitment.
Specifications
| Brand | Arrow |
|---|---|
| Part Number | 71829AKN |
| Type | Slip-on silencer |
| Silencer Material | Aluminium Dark |
| Internal Components | Stainless steel |
| End Cap | Carbon |
| Weight | 1.93 kg |
| Silencer Length | 250 mm |
| Outlet Diameter | 58 mm |
| Inlet Diameter | 55 mm |
| Road Legal | Yes — E-mark type approval |
| DB-Killer | Included |
| Fitment | Yamaha YZF-R1 / YZF-R1M (2017–2026) |
FitmentWhich bikes this fits▼
- Yamaha YZF-R1/M (2017–2026)
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