thunder alley pipe for a yz 400f

does anybody have the thunder alley slip on muffler for a yz 400 or 426 or even 450 how was the power and was it to loud i want a good pipe but it cant be real loud under 100 decibles if possible. thanks

TA pipes are VERY loud. They definately beef up the low-end power, but they are loud.

They are awesome pipes and you cant beat the price. I have been running them since '01 and the service is great also.

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