⟲ 360° — drag meThe facts.
| Brand | SC-Project |
|---|---|
| Model | CR-T LOW |
| Part Number | Y21A-L36C |
| Type | Slip-on silencer |
| Fitment | Yamaha YZF-R6 RJ27 (2017–2026) |
| Canister Material | Carbon fibre with titanium end cap |
| Outlet Diameter | 70 mm |
| Power Gain | +2.3 hp at 14,000 rpm |
| Torque Gain | +1.3 Nm at 14,000 rpm |
| Use | Racing use only — not road-legal |
DescriptionThe whole story▼
Constructed from the same carbon and titanium compounds found in MotoGP and Moto2 machinery, the SC-Project CR-T LOW slip-on silencer represents the absolute pinnacle of exhaust engineering for the Yamaha YZF-R6 RJ27. Every component — from the TIG-welded titanium internals to the CNC-machined titanium bushings — reflects a manufacturing philosophy where material choice and precision finishing are non-negotiable.
Key Features
- Carbon canister with titanium end cap: a pairing that delivers exceptional heat resistance, structural rigidity and the unmistakable aesthetic of a factory racing machine
- CNC-machined titanium bushings ensure exacting tolerances and a perfect, rattle-free fitment on the YZF-R6 RJ27 header
- TIG-welded titanium components throughout for long-term durability and a flawless, gallery-quality finish
- 70 mm large-bore outlet maximises exhaust gas flow and is central to the measurable performance gains on offer
- Carbon fibre heat shield and carbon clamp included — vibration-free mounting straight from the box
- Verified dyno gains of +2.3 hp at 14,000 rpm and +1.3 Nm torque at 14,000 rpm over the stock silencer
Built for the Track — MotoGP Materials, Road-Tested Engineering
SC-Project developed the CR-T LOW directly from its World Championship programme, and the material specification reflects that heritage. The carbon fibre canister is not a cosmetic trim — it is a structural, high-temperature component that sheds meaningful weight compared to the OEM unit, improving the R6's mass centralisation and overall agility. The titanium end cap is not only visually striking; its heat management properties and corrosion resistance make it the only logical choice at this level of construction.
The CNC-machined titanium bushings are produced to tight tolerances that eliminate the micro-movement and vibration that cheaper slip-ons introduce over time. Combined with TIG welding at every titanium joint, the CR-T LOW is built to withstand the thermal and mechanical demands of repeated track sessions without any compromise in structural integrity.
Performance Gains
The 70 mm outlet bore is a deliberate engineering decision. On a high-revving inline-four like the YZF-R6, reducing back-pressure at the top of the rev range translates directly into measurable output. The CR-T LOW delivers +2.3 hp at 14,000 rpm and an additional +1.3 Nm of torque at the same point in the rev range — tangible improvements in acceleration and top speed that riders notice immediately. The ultralight carbon and titanium construction further enhances the feel of the motorcycle, freeing up the chassis to respond more precisely to rider inputs.
Sound Character
Without a dB killer fitted, the CR-T LOW produces a deep, aggressive racing exhaust note that is entirely in keeping with its MotoGP origins. The 70 mm outlet contributes a distinctive, full-bore sound signature that marks this silencer out from track-day bolt-ons. This unit is developed and certified for racing use only and is not road-legal.
Fitment and Compatibility
The SC-Project CR-T LOW Y21A-L36C is a direct slip-on fitment for the following motorcycle:
- Yamaha YZF-R6 RJ27 — model years 2017 to 2026
The connecting pipe included in the kit ensures correct alignment and optimal flow geometry on this specific chassis. No modification to the stock header is required for installation.
What's Included
- SC-Project CR-T LOW slip-on silencer — carbon with titanium end cap (Y21A-L36C)
- Connecting pipe for perfect fitment and flow optimisation
- Carbon fibre clamp for vibration-free, secure mounting
- Carbon fibre heat shield for improved thermal management and racing aesthetics
- Mounting springs and bolts for straightforward, secure installation
- SC-Project laser-etched logo
- SC-Project decal set
- 24-month official SC-Project warranty
Important Notice
This exhaust system is designed and manufactured exclusively for racing use. It does not hold road-use approval and must not be used on public roads.
Specifications
- Part Number: Y21A-L36C
- Fitment: Yamaha YZF-R6 RJ27, 2017–2026
- Type: Slip-on silencer
- Canister material: Carbon fibre with titanium end cap
- Construction: TIG-welded titanium components, CNC-machined titanium bushings
- Outlet diameter: 70 mm
- Power gain: +2.3 hp at 14,000 rpm
- Torque gain: +1.3 Nm at 14,000 rpm
- Use: Racing use only — not road-legal
What's includedEverything in the box▼
- SC-Project CR-T LOW slip-on silencer — carbon with titanium end cap (Y21A-L36C)
- Connecting pipe
- Carbon fibre clamp
- Carbon fibre heat shield
- Mounting springs and bolts
- SC-Project laser-etched logo
FitmentWhich bikes this fits▼
- Yamaha YZF-R6 RJ27 (2017–2026)
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