S1R Race Exhaust Systems
The all-new S1R exhaust is the latest state-of-the-art product from Two Brothers Racing. The new system features carbon fiber highlighted by a natural finished Aluminum outlet and stamped spring-mounted inlet for ultimate durability.
The S1R exhaust from Two Brothers Racing showcases a brand-new design while increasing all-around performance. The beautiful new look is courtesy of TBR's innovative high temperature carbon fiber weave, while the performance is supported by TBR's constantly improving technology.
S1R New 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 sound reduction tips
S1R Carbon Fiber:
All of our carbon parts are made with a high temp aerospace grade epoxy resin. The carbon fabric is made with a 33 million modulus carbon tow then impregnated with the high temperature resin under very tight tolerances. This allows us to make sure that the fabric is impregnated with the exact resin content every time. We then place all of our products in an autoclave to cure. We cure all of our products under full vacuum and apply over a 100 psi for the cure. Using an autoclave allows us to consolidate the material and it also allows us to remove any volatiles from the material. This also includes any air that is trapped in the laminate.
Honda GROM Full Exhaust System:
10% horsepower increase
Reduces weight by 5.5 lbs
New carbon fiber material
Lightweight spiral-wound perforated core
Machined spring retained connection
High-performance packing material
CNC billet black muffler bracket
CNC billet machined outlet
Lightweight magnesium end cap
Includes a removable P1X power tip
With a unique bike like the Honda Grom, Two Brothers Racing has designed something special in the S1R exhaust. The innovative carbon fiber S1R exhaust will turn heads with a new design that has been developed to increase the horsepower by 10 percent and reduce weight by 5.5 pounds over the stock exhaust. The S1R is also fitted with a lightweight spiral wound perforated core and high performance sound absorption packing material. With noticeable horsepower gains, a lighter overall weight and that striking TBR sound, your Honda Grom will get noticed at the next Honda Grom Prix. Works with stock fender and Two Brothers Racing - Fender Eliminator Kit - Honda-Grom.
Peak HP: Stock- 8.65 hp, TBR- 9.5 hp, Difference- +8.5%hp
Peak Torque: Stock- 7.64 ft-lbs, TBR- 8.04 ft-lbs, Difference- +8.5% ft-lbs
Weight: Stock- 11.15 lbs, TBR- 5.65 lbs, Difference- -5.5 lbs
Catalyst: Stock- yes, TBR- no
O2 Sensor: Stock- yes, TBR- yes
Two Brothers Racing Products Are For Closed Course Competition Use Only. Not Intended for Street Use.