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Orders over $79.00 will receive free shipping. This is a residential delivery service, deliveries Monday through Friday from 9:00am to 8:00pm.
Learn MoreThis system utilizes the stock header assembly. Bolt on and slip-ons replace the stock restricted muffler resulting in better sound and an increase in power.
All M4 systems are designed and intended for closed-course competition use only.
Product Variant | Manufacturer Part # |
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Black | KA9422, HO1012, KA1012 |