Fisch Moto Spark Arrestor Universal muffler fitment (as long as tailpipe is round) Will fit any exhaust with a tailpipe inside diameter from 20-45mm/0.800”-1.800”(5mm/0.196” increments, 5 sizes available) Good value for the dollar compared to other solutions on the market Less than 15 min. installation time Made from 304 Stainless steel Very durable and easy to remove for cleaning High-Quality component manufactured in BC, Canada All necessary hardware included for the install (Set screws, Allen key and Loctite) We offer the following sizes: Kit 20 (20.0mm-25.4mm / 0.800”-1.000”) Will fit most trials bikes Kit 25 (25.5mm-29.4mm / 1.004”-1.157”) Will fit most 250/300 Kit 25 SHORT (25.5mm-29.4mm / 1.004”-1.157”) Shortened to fit BETA 125/200, XT Kit 30 (29.5mm-35.4mm / 1.161”-1.394”) Kit 35 (35.5mm-40.4mm / 1.398”-1.591”) Kit 40 (40.5mm-45.7mm / 1.596”-1.800”) Some pictures may be for example purposes only, on occasion parts may be on Special Order If your part is listed as ON ORDER, call (519) 268-8484 or EMAIL for availability. Last Update 03/04/2024 CS