Question about Brock exhaust
- Thread starter zx9r
- Start date
I've got the same alien head full race setup. It's pretty damn loud but I like it. I leave the baffle in as it helps with low end torgue during regular riding. I think with the baffle it's still over 100 decibles. It's crazy loud without the baffle!
+1 Brock makes great system. Yes, it's going to be louder than the Yosh for sure.
I switched from Yosh to Brocks short meg. Quite a bit louder but the performance increase and the service from Brocks is second to none.
Yes, that exhaust does take your breath away doesn't it.
shvl
Registered
I recently emailed Yoshimura and asked about the db levels of the R55 and R77. This is what they told me:
With the inserts removed the R77 will be about 100-102dB and the R55
will be about 107-109dB. Thanks!
Lauren x.428
Yoshimura Sales
Returns and Warranties
1-800-634-9166
lwaters@yoshimura-rd.com
On the Brocks website they post the following disclaimer:
ATTENTION: ALL Brock’s Performance “GP Style†Megaphones (Alien Head, Short Meg, Street Meg Shorty) mufflers are VERY LOUD. (Most register approximately 108 dB/A measured on the “A†scale at ½ indicated red line RPM at a distance of 0.5 meters (20 inches) in accordance with SAE J1287. The addition of our BPP-NRP2-19 Noise Reduction plug results in a measurement of approximately 106 dB/A which is still VERY LOUD. All Brock’s Performance exhaust systems are FOR RACE USE ONLY with no D.O.T., C.A.R.B., or EURO emissions or sound approval. Consult local authorities for the requirements in your area. Brock’s Performance will not be responsible for noise violations (tickets) or any additional expenses incurred to convert or exchange any systems to a more socially acceptable sound level.
Can't tell from the Yoshi info if the db was measured the same, but anyway hope this helps.
The Busa guys have thought of everything! Lucky for you they made sure to include a crappy speedomoter so you're not really sure whether or not you're speeding....
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