Supertech Beehive Spring Kit Single-Groove MINI R53 | R52 | R50 | Cooper | Cooper S | JCW

New Supertech Beehive Spring Kit, complete set for one cylinder head.

This spring kit is ideal for engines seeking increased performance and durability during high RPM operation. These springs are computer-designed to maintain optimal stress levels, helping to control harmonics. Combined with high-quality steel alloys, this ensures increased durability under extreme conditions.

When upgrading to a single groove system?
Upgrading to a single groove valve keeper system is recommended for engines running extended periods at high RPMs, such as in circuit racing. This system offers better stability, reduced weight, and more precise valve spring control. It is less prone to wear, improving reliability and minimizing the risk of keeper slippage.

ATTENTION: This kit fits ONLY single-groove valves!

Specs:
– Seat pressure (lbs) 75lbs @ 39.00mm – 203lbs @10.00mm
– Max lift 16.20mm
– Coil bind 22.80mm
– Rate lbs/mm 12.80lbs
– Dimensions spring ID 18.80mm – OD 28.00mm – ID top 14.20mm – OD top 24.2mm

Supertech valve springs are engineered to meet the extreme demands of high-performance and racing engines. Manufactured from premium alloys like chrome-silicon steel, they provide exceptional fatigue resistance and durability at high RPMs. Their optimized design ensures precise valve control, reducing the risk of valve float even in the most extreme conditions. Supertech’s valve springs are trusted by top engine builders for their strength, consistency, and race-proven reliability.