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Yoshimura R-77 Slip-On Exhaust Honda CBR300R / CB300F 2015
  • Stainless
  • Stainless
  • Stainless
  • Carbon Fiber
  • Yoshimura R-77 Slip-On Exhaust Honda CBR300R / CB300F 2015
  • Carbon Fiber
  • Carbon Fiber

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$399.95 - $499.95
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Yoshimura R-77 Slip-On Exhaust Honda CBR300R / CB300F

The popular R-77 offers outstanding performance, thanks to being developed in the heat of competition. It features a trapezoidal design, which allows a large volume of packing material and in turn delivers top performance. The R-77 muffler’s front cap is MIG-welded, while the end cap is riveted using high-end 304-L polished stainless steel rivets and bands.


  • Superbike technology and styling
  • Trapezoidal-shaped sleeve
  • Large volume of packing material
  • Straight baffle for ample flow
  • Innovative end-cap

Note: Please check local laws before purchasing. Some modifications may be prohibited in some states.


This Product Fits:
CB300F 2015
CBR300R 2015
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Yoshimura R-77 Slip-On Exhaust Honda CBR300R / CB300F 2015 4.6 5 5 5
Love it! Super love this slip on exhaust! It's easy to install and the sound of it is awesome. It is definitely lighter than the stock exhaust. It's a bit pricey but it's worth it though I still hope that yoshimura would lower their price a little :) Shipping was a little slow for me but I think it's just me super excited! Hehe! I think I harrassed Revzilla everyday to know the shipping status haha! But it's super worth the wait! My bike looks very cool with this added mod :) February 7, 2015
Way louder than stock & quiet core baffle doesn't help much. The fit & finish is excellent. Installed easily. Wiped it down with alcohol, then started motor. Man was it loud, so I installed the quiet core baffle. It was also very loud. Had I known it would be this loud I probably would not have bought it. It is an improvement in weight reduction and size. Much better looking too. January 5, 2015
Looks great sounds great CBR300 is the best sounding single after adding this muffler. A quiet growl at low RPMs and screams at 10,500 rpm. Will not fit the CBR250 without modification, the CBR300 head pipe is longer. December 22, 2014
It ain't a bad purchase Fast shipping, easy to install, looks great, wayyyy lighter then the orginal one. Only downside is it kinda makes your bike sound like a dirt bike with really high compression(but then again it is 300cc). But I've learned to kinda love it in a way haha I recommend it. December 11, 2014
a worthwhile aftermarket choice I wasn't expecting any big hp gains, just wanted to ditch the heavy stock exhaust. Fit and finish are good and installation was a breeze. There was one curveball though. Yosh recommends drilling a small hole in the stock header to insert a supplied metal "bolt" that fits under the hose clamp to keep the can from rotating after everything is bolted together. It was a bit loud for my liking so I installed the supplied "silencer". It still has plenty of grunt, just not quite as tinny. Note: to install the silencer pull off the rubber bung on the exhaust tip to access the screw hole, insert the silencer, add a little lock-tight and screw together. Be careful when pushing back the rubber bung, mine pushed all of the way through. Thankfully the folks at Yosh sent me a new one along with a keychain. To sum it up, good fit and finish, easy to install, maybe gained a horse or two, but the biggest plus is the wight saving. You might be surprised at how heavy the stock can is. November 9, 2014
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Have a functionality, fit, or otherwise product-specific question about the Yoshimura R-77 Slip-On Exhaust Honda CBR300R / CB300F 2015? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Yoshimura R-77 Slip-On Exhaust Honda CBR300R / CB300F 2015
Already Asked: 5 Questions, 7 Answers
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RevZilla Store asked: Why did you choose this?
Wesley B V: Top Quality and Performance Record. Also Revzilla's Excellent Price. Oct 2, 2014
Evangeline G asked: I really like this exhaust but I live in CA which I believe is not legal on the streets? What can I do to make this legal :) any thoughts? Jan 27, 2015
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Wesley B V: I know a lot of people in California who has alternative exhaust systems on there's and have not been caught or sited. However! That said. If California has smog requirements for motorcycles, Then it becomes a matter of Pay Your Money and Take Your Chances. Personally I would get it and put the Sound Baffle in so not make it too obvious. Also don't throw your factory exhaust away as it has the Cat. Converter in it. Just in case you have put it back on for smog testing if get my meaning. Also be advised Yoshimura has the exhaust header pipes with the Cat. Converter in it. That's another option to ponder. I hope this helped, Good Luck Jan 28, 2015
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Devin G: I live in Ca as well and there is nothing you can do to make it "legal." I've had it on my c300 for about 4 months and have not had any issues with law enforcement. It really comes down to how strict the cops are in your area. It is a little loud so I put in the sound suppressor that comes with it (still sounds 10x better than stock). Unless you are blasting down Main Street at 2am I doubt you will have any issues. Worst case scenario is a fix it ticket and you can put the stock can back on and sell the Yosh. The "off road use only" disclaimer is a legal triviality in Ca. Jan 27, 2015
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Evangeline G: Thank you guys! :) I bought it and I love it! Feb 7, 2015
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Jeremy O: No idea, Nevada does not smog bikes... Jan 29, 2015
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A shopper asked: Hi there
I want to ask that can this be used on a 2014 cbr250r or I should get the ones design for cbr250r?
because all the slip-on for cbr250r is for 2011-2013 model, while mines is 2014 model
so just wanna to check, or both will work?
Nov 26, 2014
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Wesley B V: Yes! The exhaust system is the same and will work. The 300's are the same frame and motor as the 250. Except the 300 has a reworked engine head and a new programed fuel module with new transmission gear ratios to take advantage of the 17% more horsepower. ( And it is FASTER )

CB300F In NV
Nov 28, 2014
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A shopper asked: I need to see a dyno graph and how heavy is this muffler? Oct 24, 2014
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Wesley B V: The muffler is little less than 1/2 the weight of the factory muffler. Approximately 5.3 lbs. If your going to DYNO TUNE your bike with this muffle you need to have the full system and not the Slip On. Also you will need a different fuel module to be programed to get the performance out of the system which would be noticeable. This slip on by itself has some minimal increase when graphed only, Not When Riding. The R77 Slip On looks good and sounds greats, not to mention the easy install. Hope this helps................WBV Oct 27, 2014
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A shopper asked: Does this product cause any issue with engine light coming on or issues with fuel that would require the engine management to be tuned? Feb 5, 2015
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Product Style RevZilla Item # Manufacturer Product # Availability
Stainless / Slip-On 972152 123002J520 In Stock: Usually ships in 1-2 business days
Carbon Fiber / Slip-On 972153 123002J220 In Stock: Usually ships in 1-2 business days