Product Description
BMW Beehive Valve Springs - Supertech SPR-BMS65-BE1-40
All Supertech valve springs are manufactured using premium Superclean Chrome Silicon Vanadium Steel alloy, engineered for high RPM durability and long-lasting performance. This premium alloy provides excellent structural memory, minimizing fatigue and helping your valvetrain maintain peak operation under stress.
Every Supertech valve spring is computer-designed to keep wire stress levels within the fatigue limits and control harmonics at high RPM. We utilize advanced simulation and precision engineering to ensure each spring delivers reliable load characteristics, making them ideal for demanding street and race applications.
This spring features a beehive profile designed to reduce valvetrain mass and improve high-RPM stability. Its specifications include a spring rate of 10.30lbs/mm, a coil bind height of 27mm, a top OD of 21.60mm, and a bottom OD of 26.50mm.
Features:
- Beehive profile improves stability and reduces mass
- 10.30lbs/mm spring rate ensures optimal valve control
- 27mm coil bind height for high-lift compatibility
- 21.60mm top OD and 26.50mm bottom OD for precise seat and retainer fit
- Premium chrome silicon vanadium alloy for extreme durability
- Note: to be used with Factory Retainer and base
Measurements:
- Spring Base O.D.: 26.5mm
- Spring Base I.D.: 18.7mm
- Spring Top O.D.: 21.6mm
- Spring Top I.D.: 13.8mm
- Seat Pressure (lbs@mm): 77 @ 40.1
- Open Lift (lbs@mm): 180 @ 10
- Max Net Lift: 12.2mm
- Coil Bind: 27mm
- Rate: 10.3 lbs/mm
Benefits:
- Enhanced RPM range and improved valvetrain stability
- Extended spring life and reliability under high loads
- Reduced valve float and improved engine response
- Ideal for high-performance, turbocharged, and endurance applications
Located in San Jose, California in the heart of Silicon Valley, Supertech was born from the same fertile ground as many other companies in this area utilizingcutting edge technology to fuel growth.
Supertech fuses this technology with passionate people and over 30 years of experience in creating the highest performance valves and valve train components available.
Supertech provides the racing market with superior valves and valve train components for virtually every type of racing. Whether it’s Drag Racing, Rally, Road Racing or any other type of motorsport, Supertech is sure to have the perfect performance solution for your application. If not, we are always willing to work with you to custom manufacture the solution that is just right for you.
