'04-'06 YZF-R1 Product No Description  (DUAL SILENCER) 11211 TITANIUM FULL EXHAUST W/OVAL CAN 11212 SUS FULL EXHAUST W/OVAL CAN 11213 TITANIUM SLIP-ON W/OVAL CAN 11215 TITANIUM FULL EX W/OVAL CAN CONICAL END 11217 TITANIUM SLIP-ON W/OVAL CAN CONICAL END             FULL EXHAUST Installation Instructions Down Load (pdf/183K)    SLIP-ON EXHAUST Installation Instructions Down Load (pdf/120K) Specification: Titanium thickness: 0.889mm Conical: 35φ-42.7φ Length: Oval, 380mm (90/130) Perforated Core: 50.8φ/45φ tapered Oil filter exchange: detach the exhaust pipe Oil exchange: detach the exhaust pipe Passenger's foot peg: OK Sound DB: 102db Weight: 4.88Kg (titanium)