M4 Honda CBR500R 17-22 Slip On Exhaust

Really like this M4 slip-on, all my exhaust problems are now solved. Given only two cylinders, and with it's lower RPM operating range compared to super sport, stock exhaust pipes can sound perhaps a little bit boring on sports bikes 500cc and below. But with a good slip-on modification, a sports bike exhaust sound could be spiced up, the bike's look improved, the performance increased, loss of a few extra pounds of material weight gained, and a better balanced and centralized weight distribution achieved. First, the shorty that I bought to replace stock exhaust sounded too monotone, had a unpleasant low-bass frequency sound, and it sapped-out significant horse power. So I had to keep searching for the right slip-on. Then considered buying the Yoshimura Signature R-77 Slip-on exhaust, but the price is so outrageous everywhere. Finally, discovered the M4 at STG and bought it for my CBR500R. The M4 has a nice, smooth, clean but powerful tone that roars, sings, and soars through the RPMs. I mean it really brings out the sound character of optimum performance that I like about sports bikes. The performance increase was also felt instantly across the whole spectrum of power-band. I was like, wow, this fixed and improved everything, and apparently does not need to be further dialed-in on a dyno adding other mods or programs like perhaps some other shorty slip-on might. You know it sounds good when you can hear the intricate precision of the machinery at work, outputting the engines HP in beautiful frequencies of exhaust and sound output. It's like they properly equalized the pipe so it performs best and sounds right. And like most exhaust systems, this M4 also has a really nice crackle and rasp on deceleration at certain rpm, it over-all sounds more exciting than stock but still retains the soft-cool-mellow character of a properly tuned and baffled pipe. I mean that it's not obnoxious or loud, and does not cause hearing fatigue due to low-bass frequencies that you might find in the sound frequencies of some other shorty slip-on pipes. The M4 is an amazing modification over stock, it is probably one of the very best carbon race pipes out there. But if I had to purchase the M4 again, any other material option offered would also be great, because the down-side of carbon-resin is the need to repack the fiber every five thousand miles to prevent discoloration. This carbon slip-on looks awesome, so the material selection consideration also depends on the color and aesthetics of the whole bike. So all of those different material choices offered at check out are of course also subjective to preference for artistic appeal. Installation was self-explanatory, but just look at an example also review the information. Don't know about stage-two baffle, but the stage one (baffles are sold separately) sounds good, it is not too loud but is the least quietest available. Be sure to use Lock-tight to fasten and secure the baffle bolt. The M4 is an amazing modification, but can only speak about it for the CBR500, yet it is probably one of the very best carbon race pipes out there. It works great on my street bike, goes great with a K & N air filter, still debating Power Commander V for Honda (Fuel & Ignition) for a final mod to further increase performance, but maybe not though because everything sounds and runs great now, in great part thanks to this M4 slip-on from STG.

Stock exhaust pipes are perhaps a little bit boring sounding on sports bikes, given the twin cylinders at 500cc. The CBR needs to spice up the sound, bring out the performance, and lose a few pounds of extra weight. Tried the Coffman slip-on but it seemed to cause my bike lose significant horsepower, but it increased torque slightly, given -if using shorter shift times as the power-band seems to prompt, and it also sounded muddy and louder. Perhaps needs a DynoJet Power Commander V Fuel & Ignition to make that pipe perform? No thanks because don't like the sound of shortys anymore anyways. Then began eying the Yoshimura Signature R-77 Slip-On Exhaust but the price is always so outrageous. Luckily discovered the M4 carbon slip-on at STG. Very happy with it. Makes it sound as good as a twin cylinder CBR500 is going to and it brought out all the power you can get from a slip-on likely. No dyno work needed. To its credit, and unlike Coffman shorty, this M4 doesn't have that low-bass frequency boxy-booming muffler noise that gives a rider that ear fatigue feel. The M4 has a nice, clean but powerful and smooth tone. And like most exhaust systems, this M4 also has a really nice crackle and rasp on deceleration at certain rpm times, better sounding than stock. Also, the performance increase was felt instantly across the whole spectrum of power-band. The M4 is an amazing tasty modification over stock, it is probably one of the very best carbon race pipes out there. But if could purchase the M4 again, any other material option offered would be great because the down-side of carbon resin is the need to repack the fiber every five thousand miles. But this carbon slip on looks awesome, so the material consideration also depends the color and aesthetics of the whole bike. All those choices are subjective to preference for art appeal. The stage one baffle sold separately sounds good, not too loud, but be sure to use lock tight to fasten and secure there. All problems solved, really like this M4.