91957 · 13mm Rear spring, red (2.40lb)

Other springs in this series (14)

Number	Name	Rate	Length mm
91639	12mm rear spring (72mm), Green (2.20lb)	2.2 lb/in	12
91636	12mm front spring (54mm), White (4.10lb)	4.1 lb/in	12
91948	13mm rear spring, white (1.90lb)	1.9 lb/in	13
91949	13mm Rear Spring, Gray (2.00lb)	2 lb/in	13
91950	13mm rear spring, blue (2.20lb)	2.2 lb/in	13
91951	13mm Rear spring, yellow (2.30lb)	2.3 lb/in	13
91957	13mm Rear spring, red (2.40lb)	2.4 lb/in	13
91958	13mm Rear spring, orange (2.50lb)	2.5 lb/in	13
91959	13mm Rear Spring, Purple (2.60lb)	2.6 lb/in	13
91941	13mm Front Spring, Gray (3.40lb)	3.4 lb/in	13
91942	13mm Front Spring, Blue (3.60lb)	3.6 lb/in	13
91943	13mm Front Spring, Yellow (3.80lb)	3.8 lb/in	13
91944	13mm Front spring, red (4.00lb)	4 lb/in	13
91945	13mm Front spring, orange (4.30lb)	4.3 lb/in	13
91946	13mm Front Spring, Purple (4.60lb)	4.6 lb/in	13

Year	Release	Role
unknown	Team Associated RC10T84 Team Kit	in the box

Compatibility according to the manufacturer's parts lists; see each release for the source document.