2015 Yamaha YZF-R1M Is Lighter and More Powerful with a TBR Carbon Exhaust

2015 Yamaha YZF-R1M with TBR S1R silencer 6 photos
Photo: Two Brothers Racing
2015 Yamaha YZF-R1M with TBR exhaust2015 Yamaha YZF-R1M with TBR exhaust, rear quarter view2015 Yamaha YZF-R1M with TBR exhaust looks neatDyno chart for the 2015 Yamaha YZF-R1M with TBR exhaust2015 Yamaha YZF-R1M TBR exhaust
Two Brothers Racing unveil the latest addition to the high-performance exhaust line-up in the shape of an S1R canister designed for the all-new Yamaha R1M. The track-only version of Yamaha's superbike can now be upgraded with a slip-on exhaust which shaves off some weight and increases top-end power.
Of course, the benefits of running a TBR S1R silencer don't stop here. The mid-range torque is also improved while the weight of the final exhaust element is reduced dramatically. And with the enhanced aesthetics, the S1R adds to the racey looks of the R1M, as well.

The TBR silencer has a quarter of the stock exhaust's mass

The stock silencer of the YZF-R1M weighs 17.5 lb (7.9 kg), whereas the Two Brothers Racing unit looks featherlight at 4.5 lb (2 kg). The S1R can has O2 sensor ports, but the catalyst converter was ditched, hence the massive weight improvement.

Coupling this with the new performance figures provides a good image of how the R1M can be improved, and track enthusiasts who were able to secure one of these machines will surely appreciate this.

Installing the TBR exhaust will drive the peak power of the Yamaha R1M to 172.3 hp, 3.34 hp more than it does in stock trim. However, at 11,500, the max horsepower gain is 4.1 hp. Conversely, the peak torque of the engine equipped with the TBR can is only 0.38 lb-ft (0.5 Nm), but the max torque gain is 2.37 lb-ft (3.21 Nm) at 5,000 rpm.

Two Brothers Racing's S1R silencer is crafted from 33 million modulus carbon tow impregnated with aerospace high-temp resin and accepts compatible dB killers. Noise levels may be a problem in certain situations, as the R1M stock exhaust produced 95 dB of sound pressure a 5,000 rpm while the S1R delivers a staggering 108.5 dB value at the same engine speed.

According to TBR, the can "comes with all necessary hardware, tubing, instructions for installation." Here are the main features:
  • Aerospace high-temp carbon fiber
  • Teflon coated magnesium end-cap
  • Stamped spring-fit inlet
  • Aluminum CNC Machined outlet
  • Rubber-lined styled mount
  • Spiral-wound perforated core
  • Accepts P-Series sound reduction tips."

The Two Brothers Racing S1R silencer for the 2015 Yamaha YZF-R1M can be had for $600 (€555).

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