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RLV B91XL 1-5/16 Box Stock Legal (Round Hole) Muffler
4104 RLV B91XL 1-5/16” Legal (Round Hole) Muffler
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RLV B91XL 1-5/16 Box Stock Legal (Round Hole) Muffler

Part Number: 4104
Online Price: $47.14
Muffler RLV B91XL 1-5/16 Box Stock Legal (Round Hole)
Availability: In Stock.

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Description

This spec muffler is for "stock" 4-cycle classes and the BP clone class in WKA, FKA, AKRA, NKA, etc. 

Mufflers have been mandated for many tracks due to noise pollution. Unfortunately, track neighbors don't enjoy the thundering roar of racing engines. If you are not limited by the type of muffler and are running an open class, we recommend using the less restrictive 4106 mufflers. If you are not required to have a muffler, we always found engines make more power without them. 


B91XL 1 5/16" EXHAUST SILENCER FITS 1 5/16" OD 4 CYCLE PIPE. IT ALSO FITS A 1 1/4" OD 4-CYCLE PIPE WHEN USED WITH A 4134 SHIM.

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