
Supertech Beehive Valve Spring & Retainer Kit For B48 MINI engines
Improve the reliability and high RPM performance of your MINI B48 Cooper S or JCW and GP engine with Supertech Beehive valve springs. Engineered for demanding high performance applications, these premium valve springs provide superior valve control and stability under increased engine loads and elevated RPM levels.
Designed to withstand the stresses associated with tuned and upgraded engines, Supertech’s beehive design helps reduce valve train mass while maintaining excellent spring pressure and durability. The result is improved reliability, reduced valve float and consistent performance when pushing the limits of the B48 engine.
Kit Specifications:
- Spring pressure: 75lbs @ 37mm
- Open pressure: 155lbs @ 10mm
- Coil bind: 23.20mm
- Spring rate: 8lbs/mm
Kit Contents:
- SPR-FE20BE Beehive Valve Springs ×16
- RET-BMB48-TE Retainers ×8
- RET-BMB48-TI Retainers ×8
Improve the reliability and high RPM performance of your MINI B48 Cooper S or JCW and GP engine with Supertech Beehive valve springs. Engineered for demanding high performance applications, these premium valve springs provide superior valve control and stability under increased engine loads and elevated RPM levels.
Designed to withstand the stresses associated with tuned and upgraded engines, Supertech’s beehive design helps reduce valve train mass while maintaining excellent spring pressure and durability. The result is improved reliability, reduced valve float and consistent performance when pushing the limits of the B48 engine.
Kit Specifications:
- Spring pressure: 75lbs @ 37mm
- Open pressure: 155lbs @ 10mm
- Coil bind: 23.20mm
- Spring rate: 8lbs/mm
Kit Contents:
- SPR-FE20BE Beehive Valve Springs ×16
- RET-BMB48-TE Retainers ×8
- RET-BMB48-TI Retainers ×8
Original: $1,436.12
-65%$1,436.12
$502.64Description
Improve the reliability and high RPM performance of your MINI B48 Cooper S or JCW and GP engine with Supertech Beehive valve springs. Engineered for demanding high performance applications, these premium valve springs provide superior valve control and stability under increased engine loads and elevated RPM levels.
Designed to withstand the stresses associated with tuned and upgraded engines, Supertech’s beehive design helps reduce valve train mass while maintaining excellent spring pressure and durability. The result is improved reliability, reduced valve float and consistent performance when pushing the limits of the B48 engine.
Kit Specifications:
- Spring pressure: 75lbs @ 37mm
- Open pressure: 155lbs @ 10mm
- Coil bind: 23.20mm
- Spring rate: 8lbs/mm
Kit Contents:
- SPR-FE20BE Beehive Valve Springs ×16
- RET-BMB48-TE Retainers ×8
- RET-BMB48-TI Retainers ×8






















