Classic RLV #4104 stock class muffler with a 1 5/16" opening. Dyno tuned to actually create better performance on most engines. Mandated by most karting sanctions. Comes with clamp. 7" long
Don't let the name "Silencer" / "Muffler" fool you, it is designed to help give the engine a little extra torque, it does in fact take the edge of the POP POP during deceleration, but it's still LOUD.
The B91XL muffler fits the following pipes:
If using a muffler with header pipe, it must be supported with a brace to prevent damage to the pipe. we would recommend part #KDHBS
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It fit the header on my predator 420 nice and snug and the clamp tightened down securely . I also safety wired it as suggested. The stock mode rated silencer seems to compliment the stage one upgrades on my engine, still allowing it to run to its full potential while keeping excess noise to a minimum. I am happy with the purchase.
It sounds really good but, I wish it was just a little bit quieter.
Great piece would definetly recomend
I love the look and it fits perfect however silencer is a stretch it’s very very loud. It’s loud enough that I’ll have to buy a different muffler or slip on
This silencer will make your neighbor's a little happier about the noise. Lol
Great product. sounds great and looks great
Exhaust Silencer 1-5/16" with HD SS Clamp
It works perfectly I’ll be buying more for my other go karts.
Not as quiet as I hoped but will do
just what i wanted