These all new BTR Beehive springs were designed to provide maximum valve control and valve train stability in today's demanding high performance engines. Tested on both the engine dyno and Spintron to verify performance and longevity.

 

Spring specs:

140lb @ 1.950"

400lb @ 1.310"

Coil bind @ 1.240"

407lb spring rate

.650" max lift

 

We recomend these spring with the BTR Stage 1 & Stage 2 V2 Camshafts for street use. 

SKU BTR-1515-16
Brand BTR
Shipping Weight 3.7000kg
Shipping Width 0.100m
Shipping Height 0.070m
Shipping Length 0.300m
Shipping Cubic 0.002100000m3