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 TBR Fender Eliminator Kit.
D**L
An unexpected but awesome change in handling.
My biggest problem with the muffler turned out to not be a problem at all, I was going to take that ugly sticker off of it right away but the sticker that was on mine was black and a looks a million times better. (See attached picture)The biggest change to the bike besides the sound was the way the Grom handles now, it changes directions like it lost 40 lbs up top instead of just the 5 lbs or so. It is a great feeling.The sound is great, but a bit too loud without ear plugs even with the decibel killer in. I am 38, so if you are younger it is probably just fine or too quiet. It comes with the "biggest" db killer that Two Brothers makes installed already. I emailed Two Brothers to confirm that it comes with the "biggest" one because someone on here mentioned you could get one that would lower the db even more, but no luck. It is as quiet as it will get. I think I will lose my hearing quick enough that it won't matter anyway. It was totally worth every penny for the handling and weight change alone, having a great sound that makes me redline it constantly is a bonus. No more making motorcycle noises with my mouth!
F**W
subtle, yet throaty. Sounds great!
The fit and finish is great. I was worried about descriptions of it sounding like a dirt bike, but the exhaust note is excellent for this little Grom. It sounds like a classy little dirt bike that won't piss off the neighbors or get nasty looks. The tone is subtle, yet throaty . Very happy with this two brothers product!
E**.
Great product!
Fast shipment and perfect fit. Makes the Grom sound like a 250cc and it really gives it noticeable more power!
P**S
Five Stars
braaap braaaaaappp!!!!!
Z**Y
Awesome exhaust
This exhaust is worth every penny, sounds like a dirt bike, a beautiful sound and it turns heads. It's easy to install and it looks great. This exhaust is worth it. I took out the silencer tip and it's even more louder!! I love it
A**R
Highly recommend this product and company
Exhaust sounds great with an immediate increase in MPH. Product is great quality with equally great craftsmanship. I would highly recommend this product. The transaction through Amazon was just as positive.
L**A
Great kit.
Easy installation. All the stickers come off with ease for a clean look. Sounds amazing for a 125cc.
B**K
instant power increase and it sounds so AWESOME!!
Only took 7 minutes to install, instant power increase and it sounds so AWESOME!!!
Trustpilot
3 weeks ago
2 months ago
