Premium Mikuni BST 33 Carburetor Throttle Diaphragm – Model M1M-30-68
Restore smooth throttle response and optimal engine performance with our precision-manufactured carburetor throttle diaphragm. Designed as a direct-fit replacement for Mikuni BST 33 carburetors, this membrane features exact dimensions of 30mm inner diameter and 68mm outer diameter, ensuring perfect sealing and reliable operation under real-world riding conditions.
Key Features
- Exact OEM-compatible dimensions: Inner diameter 30mm / Outer diameter 68mm
- High-quality, flexible rubber compound resistant to fuel, ethanol, and temperature variations
- Precision molding for consistent thickness and airtight performance
- Direct replacement for original Mikuni BST 33 throttle diaphragms
- Suitable for both single and dual carburetor setups
Wide Vehicle Compatibility
- BMW F650 (1993–2000) including Funduro and Strada models
- Suzuki GS500E
- Other motorcycles and applications equipped with Mikuni BST 33 series carburetors (including certain Aprilia Pegaso and related dual-sport models)
Always verify your carburetor model and existing diaphragm size before ordering.
Why Choose Our Diaphragm? As a specialized Chinese manufacturer with years of experience in motorcycle carburetor components, we focus on consistent quality control, material durability, and competitive wholesale pricing. Our M1M-30-68 diaphragms are produced for global distribution, serving distributors, repair shops, and bulk buyers who require reliable, cost-effective replacement parts.
These diaphragms help eliminate common issues such as poor throttle response, hesitation, or vacuum leaks caused by aged or damaged original membranes. Easy to install during routine carburetor rebuilds or maintenance.
Ideal for Bulk Purchasers We support wholesale and large-volume orders with stable supply capacity, consistent batch quality, and flexible packaging options. Perfect for motorcycle parts distributors, aftermarket suppliers, and professional workshops worldwide.
Technical Specifications
- Model: M1M-30-68
- Type: Throttle / Slide Diaphragm (Membrane)
- Inner Diameter: 30 mm
- Outer Diameter: 68 mm
- Application: Mikuni BST 33 carburetors
- Material: High-grade fuel-resistant rubber
- Origin: Manufactured in China
