HSR Carburetors – VM Carburetors – TM Carburetors – BS Carburetors – BN Carburetors – TMX Carburetors – RS Carburetors – PHH Carburetors
Mikuni Racing – BS Series Carburetors & Rebuild Kits
Constant Velocity Carburetors
Mikuni’s BSR and BST carburetors are highly regarded for their reliability, smooth operation, and adaptability across a wide range of motorcycles and ATVs. Both the BSR and BST models offer seamless throttle transitions, reducing engine stutter or hesitation during acceleration. Their constant velocity (CV) design inherently improves fuel efficiency by maintaining an optimal air-fuel ratio across varying operating conditions.
The BSR series is a CV carburetor featuring a uniquely shaped, diaphragm-controlled slide for quick response and precise control. This design allows the carburetor to adjust the slide position based on pressure differences between the venturi and diaphragm chamber, rather than being directly linked to the throttle. BSR carburetors are known for delivering smooth acceleration and improved fuel efficiency, making them popular in mid-sized to large motorcycles and ATVs.
The BST series, on the other hand, uses a flat slide for faster response. Known for their versatility, BST carburetors are widely used in both street and off-road motorcycles and ATVs. They are especially favored in dual-sport motorcycles due to their balanced performance and fuel economy.
Special Order – Items are Drop Ship-able from Mikuni American. Please inquire for current availability and lead times.
Mikuni Racing BS Series Carburetors
| Model | Part Number | More Info |
| Mikuni BST Carburetor | #BST34-235 | More Info |
| Mikuni BST Carburetor | #BST34-288 | More Info |
| Mikuni BSR Carburetor | #BSR33-68 | More Info |
| Mikuni BSR Carburetor | #BSR33-71 | More Info |
| Mikuni BSR Carburetor | #BSR33-73 | More Info |
| Mikuni BSR Carburetor | #BSR33-P74 | More Info |
| Mikuni BSR Carburetor | #BSR33-P48 | More Info |
Mikuni BS Series Carburetor Rebuild Kits
| Product Type | Application | Part Number | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Suzuki Ozark 250 ATVs | MK-BSR29-20 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Yamaha Raptor 125cc & 250cc ATVs | MK-BSR29-41 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Suzuki LT-Z Quad Sport ATVs | MK-BSR29-7 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR32 Carburetor for Suzuki GZ250 motorcycles | MK-BSR32-46 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR32 Carburetor for Suzuki DZR250 motorcycles | MK-BSR32-69 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR33 33mm Carburetor for Yamaha ATVs | #MK-BSR33 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR33 Carburetor for Can-Am and John Deere ATVs | #MK-BSR33-01 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR33 Carburetor for Yamaha Raptor ATVs . One Rebuild Kit rebuilds (2) BSR33-41 Carburetors. | MK-BSR33-41 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR33 Carburetor for Yamaha Big Bear, Bruin ATVs | MK-BSR33-66 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR33 Carburetor for Beta Trial Evo | MK-BSR33-79 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR33 Carburetor for Yamaha Rhino 450 UTVs | MK-BSR33-P68 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR34 Carburetor for Yamaha Big Bear 350 and Bear Tracker 250 ATV | MK-BSR34-198 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR36-34 Carburetor for Suzuki DRZ400 | MK-BSR36-34 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Suzuki LTZ400 ATVs | MK-BSR36-58 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR36-89 Carburetor Multiple Chinese Models OEM BSR36-89 | MK-BSR36-89 | More Info |
| Mikuni Rebuild Kit | Mikuni BDS Carburetors for Yamaha V-Star 650 Motorcycles | MK-BDS28-54 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Suzuki LS650 Motorcycles | MK-BS40-34 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Suzuki KingQuad | MK-BSR29-4 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Suzuki QuadRunner | MK-BSR29-1 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Yamaha RX Snowmobiles | MK-BSR37-68SM | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Yamaha V-Star 1100 motorcycles | MK-BSR37-B1 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Yamaha Road Star 1600 and 1700 motorcycles | MK-BSR40-20 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Yamaha Rhino 660 ATVs | MK-BSR42 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Bombardier / Can-Am ATVs | MK-BSR42-04 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Can-Am ATVs and UTVs | MK-BSR42-07 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Yamaha Grizzly 660 ATVs | MK-BSR42-10 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR Carburetor for Polaris ATVs | MK-BSR42-16 | More Info |
| Mikuni Rebuild Kit | Mikuni BSR42 Carburetor for Yamaha ATVs | MK-BSR42-31 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Suzuki DR200 | MK-BST31-120 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Suzuki ATVs | MK-BST31-40 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Suzuki DR350S | MK-BST33-218 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Yamaha XT-225 & TT-R 225 Motorcycles | MK-BST34-101 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Polaris ATVs & UTVs | MK-BST34-190 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Suzuki TL-500F ATVs | MK-BST34-207 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Arctic Cat ATVs | MK-BST34-216 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Kawasaki KL250 Sherpa | MK-BST34-236 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Can-Am Tracker 500. | MK-BST34-242 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Yamaha Wolverine 350 | MK-BST34-250 | More Info |
| Mikuni Rebuild Kit | Mikuni BST36 Carburetor for Triumph motorcycles | MK-BST36-C326 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for KTM motorcycles | MK-BST40-225 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Suzuki DR650 SE | MK-BST40-233 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Yamaha Grizzly 600 ATVs | MK-BST40-249 | More Info |
| Mikuni Rebuild Kit | Mikuni BST Carburetor for Polaris ATVs | MK-BST40-251 | More Info |
Special Order – Items are Drop Ship-able from Mikuni American. Please inquire for current availability and lead times.