The T-5 Stainless Race System for the 2013 CRF110F is small in size, but still offers big performance gains like Pro Circuit's standard size exhaust systems. This two-piece exhaust system was designed for durability, and comes equipped with a removable spark arrestor, asymmetrical muffler design for increased packing volume, and is constructed from stainless steel and aluminum. Whether it be a mini bike race, trail riding, or just some riding in your backyard for fun, the T-5 Stainless Race System for the 2013 CRF110F is perfect for shredding it up no matter where you're at. Lightweight and durable. Strong muffler bracket. TIG welded. Asymmetric muffler design for increased packing volume. Removable U.S.F.S.-approved spark arrestor.