SC-Project CR-T slip-on exhaust Yamaha YZF-R1 RN49 2017-2019 titanium carbon⟲ 360° — drag me
1.75 k g
02 · Data & docs

The facts.

Technical data
BrandSC-Project
ModelCR-T Slip-On + Cat Replacement Pipe
Part NumbersY11B-DET36TR (Titanium) / Y11B-DET36CR (Carbon)
FitmentYamaha YZF-R1 / YZF-R1M RN49 (2017–2019)
System Weight1.75 kg (saving of 6.25 kg vs stock 8 kg)
Outlet DiameterØ70 mm
Sound Level123 dB @ 6,500 rpm
ConstructionT.I.G.-welded titanium and carbon; CNC-machined titanium bushings
Intended UseRacing use only — not road legal
DescriptionThe whole story▼

Built without compromise for the track, the SC-Project CR-T Slip-On paired with its titanium cat replacement pipe transforms your Yamaha YZF-R1/M RN49 into a MotoGP-derived weapon. With a combined system weight of just 1.75 kg — a saving of 6.25 kg over the stock exhaust — and a free-breathing Ø70 mm outlet, every throttle input is sharper, every lap faster.

Key Features

  • Dramatic 6.25 kg weight reduction (SC-Project system: 1.75 kg vs stock: 8 kg) for measurably improved acceleration and handling balance.
  • Titanium de-cat link pipe optimises exhaust flow, eliminating back-pressure and unlocking the CR-T's full performance potential.
  • Large Ø70 mm outlet for maximum exhaust gas throughput and peak flow efficiency.
  • T.I.G.-welded titanium and carbon components with CNC-machined titanium bushings for race-grade precision and long-term durability.
  • Titanium flame-guard mesh for an unmistakable motorsport aesthetic and optimised exit flow.
  • Compatible with original pillion footpegs and pre-drilled for the OEM lambda sensor connection.
  • Two finish options: Titanium (Y11B-DET36TR) and Carbon with rivet plaque (Y11B-DET36CR).

Track Performance

The CR-T is SC-Project's most race-focused slip-on silencer, developed directly from their MotoGP programme. The titanium cat replacement pipe removes the catalytic converter entirely, allowing spent gases to exit through the shortest, smoothest possible path. The result is a throttle response that feels immediate and a power delivery that rewards precise corner exits. CNC-machined titanium bushings at every joint guarantee leak-free fitment under sustained high-temperature racing conditions, while T.I.G. welding throughout ensures the assembly remains rigid even under the vibration loads a pushed R1 generates at the limit.

MotoGP Sound

At 123 dB measured at 6,500 rpm, the CR-T produces a raw, unfiltered racing note that is instantly recognisable on circuit. There is no dB killer supplied or intended — this system is engineered purely for track use where maximum sound presence is an asset, not a liability. The titanium flame-guard mesh at the exit contributes both to the aggressive visual signature and to controlled gas dispersion at high revs.

Materials and Build Quality

SC-Project's material selection draws directly from MotoGP-level engineering. The titanium version (Y11B-DET36TR) prioritises absolute minimum weight combined with outstanding heat resistance and structural integrity. The carbon version (Y11B-DET36CR) pairs a hand-finished carbon fibre canister with a rivet plaque for a motorsport visual that complements the R1's aggressive bodywork. Both variants share the same titanium end cap, titanium cat replacement pipe and CNC-machined titanium bushings, so performance is identical regardless of the finish chosen.

Fitment and Compatibility

  • Yamaha YZF-R1 RN49 — model years 2017, 2018, 2019
  • Yamaha YZF-R1M RN49 — model years 2017, 2018, 2019
  • Compatible with original pillion footrest hangers
  • Pre-drilled for OEM lambda sensor — no additional adapter required

Important Notice

FOR RACING USE ONLY. This exhaust system does not carry road-use type approval and must not be used on public roads. Intended exclusively for closed circuit and competition use.

Specifications

Brand SC-Project
Model CR-T Slip-On + Cat Replacement Pipe
Part Numbers Y11B-DET36TR (Titanium) / Y11B-DET36CR (Carbon)
Fitment Yamaha YZF-R1 / YZF-R1M RN49 (2017–2019)
System Weight 1.75 kg (saving of 6.25 kg vs stock)
Outlet Diameter Ø70 mm
Sound Level 123 dB @ 6,500 rpm
Construction T.I.G.-welded titanium and carbon; CNC-machined titanium bushings
Intended Use Racing use only — not road legal
What's includedEverything in the box▼
  • SC-Project CR-T slip-on silencer (titanium or carbon, depending on part number)
  • Titanium de-cat link pipe
  • Mounting springs and bolts
  • SC-Project sticker
  • 24-month official SC-Project warranty
FitmentWhich bikes this fits▼
  • Yamaha YZF-R1/M RN49 (2017–2019)
07 · Support

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08 · Paddock

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