BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | STREET EXHAUST EXHAUST 14 DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 4-6 FOR CATEGORY CODES, IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. PRODUCTS NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IF NOT CATEGORIZED AS “1” OR “4”. SLIP-ON SERIES MUFFLERS (CONT) FITS MODEL DESCRIPTION PART # EMIS* BMW (CONT) S 1000 R 21-25, M 1000 R 21-25 Single carbon muffler w/ titanium end cap 1811-4213 3 4-into-1 stainless header (also fits w/ Akrapovic standard (first fit)/B MW accessory Akrapovic silencer. For perfect performance, throttle response and durability special developed mapping is recommended.) 1812-0400 3 4-into-1 titanium header (also fits w/ Akrapovic standard (first fit)/B MW accessory Akrapovic silencer. For perfect performance, throttle response and durability special developed mapping is recommended.) 1812-0401 3 Optional noise damper for PART #1811-4213 1860-2186 N/A S 1000 XR 15-19 4-into-1 stainless header (for perfect performance, throttle response and durability special developed mapping is recommended) 1812-0238 3 S 1000 XR 20-25 Single carbon muffler w/ carbon end cap 1811-4018 3 4-into-1 stainless header (for perfect performance, throttle response and durability, ECU remapping is recommended) 1812-0486 3 4-into-1 titanium header (for perfect performance, throttle response and durability, ECU remapping is recommended) 1812-0485 3 S 1000 XR 20-25, M 1000 XR 20-24 Single carbon muffler w/ carbon end cap (will fit w/ BMW side cases; includes carbon fiber heat shield) 1811-4852 3 4-into-1 stainless header (for perfect performance, throttle response and durability, ECU remapping is recommended) 1812-0486 3 4-into-1 titanium header (for perfect performance, throttle response and durability, ECU remapping is recommended; will fit w/ Akrapovic standard (first fit)/ BMW accessory Akrapovic silencer; will not fit w/ Akrapovic first fit heat shield) 1812-0485 3 Optional noise dampener 1860-0608 N/A R nineT 14-16 Titanium link pipe for low installed muffler (If removing pillion passenger frame, aluminium muffler holder from BMW’s accessories range (BMW product code 77 11 8 536 136) must be mounted) 1812-0214 3 R nineT 14-20, R nineT Racer/Pure/ Scrambler/Urban G/S 17-20 Single black titanium muffler w/ carbon end cap (must order PART #1812-0293 or PART #1812-0292 to install) 1811-3290 3 Titanium link pipe for low installed muffler (must remove pillion passenger frame to install and aluminium muffler holder from BMW’s accessories range (BMW product code 77 11 8 564 071) must be mounted, and covers for the main frame’s threaded fasteners (BMW product code 77 25 8 536 857) are also recommended to hide the unattractive screw connections on the main frame) 1812-0292 3 Titanium link pipe for high installed muffler (must remove passenger pegs to install) 1812-0293 3 2-into-1 titanium header (must order link pipe to install) 1812-0253 3 R nineT 21-23, R nineT Racer/Pure/ Scrambler/Urban G/S 21-23 Single black titanium muffler w/ carbon end cap (must order PART #1812-0541 or PART #1812-0542 to install) 1811-3290 3 Titanium link pipe for low installed muffler (must remove pillion passenger frame to install and aluminium muffler holder from BMW’s accessories range (BMW product code 77 11 8 564 071) must be mounted, and covers for the main frame’s threaded fasteners (BMW product code 77 25 8 536 857) are also recommended to hide the unattractive screw connections on the main frame) 1812-0541 3 Titanium link pipe for high installed muffler (must remove passenger pegs to install) 1812-0542 3 2-into-1 stainless header (must order link pipe to install) 1812-0539 3 2-into-1 titanium header (must order link pipe to install) 1812-0540 3 R 12 nineT/R 12/R 12 S 24-25 Dual black stainless mufflers w/ stainless end caps, titanium link pipe 1811-4676 3 2-into-1 titanium header (will also fit w/ BMW accessory Akrapovic silencer; re-mapping the ECU is recommended in order to prevent check engine light warning signal and to achieve optimized performance and throttle response) 1812-0582 3 R 1200 GS 04-09, R 1200 GS Adventure 04-09 Single titanium muffler w/ titanium end cap 1811-2596 3 R 1200 GS 10-12, R 1200 GS Adventure 10-13 Single titanium muffler w/ carbon end cap 1811-2541 3 2-into-1 stainless header 1812-0204 3 R 1200 GS 13-16 (liquid cooled), R 1200 GS Adventure 14-16 Single black titanium muffler w/ carbon end cap 1811-2754 3 R 1200 GS 13-18 (liquid cooled), R 1200 GS Adventure 14-18 Single black titanium muffler w/ carbon end cap (carbon heat shield will not fit w/ optional header set) 1811-3302 3 2-into-1 titanium header 1812-0221 3 R 1200 R 15-18, R 1200 RS 15-18 Single black titanium muffler w/ carbon end cap 1811-3365 3 2-into-1 titanium header 1812-0242 3 R 1250 GS 19-23, R 1250 GS Adventure 19-23 Single titanium muffler w/ carbon end cap (race) (will fit w/ BMW side cases; carbon heat shield included) 1811-3701 3 Single black titanium muffler w/ carbon end cap (race) (will fit w/ BMW side cases; carbon heat shield included) 1811-3703 3 2-into-1 stainless header (features exhaust valve for improved rideability in lower rpm, also fits w/ Akrapovic standard (first fit)/B MW accessory Akrapovic silencer. Re-mapping the ECU is recommended in order to prevent check engine light warning signal and to achieve optimized performance and throttle response.) 1812-0528 3 2-into-1 titanium header (features exhaust valve for improved rideability in lower rpm, also fits w/ Akrapovic standard (first fit)/B MW accessory Akrapovic silencer. Re-mapping the ECU is recommended in order to prevent check engine light warning signal and to achieve optimized performance and throttle response.) 1812-0526 3 1811-4213 1811-4676
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