BMW /2 Suspension Spring Specifications

BMW produces four different suspension springs for the /2:  There are different springs Front and Rear.  And for each position, BMW produces a spring designed for either Solo or Sidecar use.

The length and geometry of the front and rear springs is pretty close. You can use a front spring in the rear and vice-versa. For example, a little extra firmness in your suspension can be obtained by installing rear solo springs in the front and rear of your motorcycle.

A little extra firmness can also be obtained by running Scottie's Workshop Dual Valve High Pressure Gas Shocks.

Big thanks to Michael Cecchini and Ted Porter for his research on spring rates.

Factory Recommended Position	Type	Preload (inches)	Next 1" Travel (inch/lbs)	From 2-3" (inch/lbs)	From 3-4" (inch/lbs)	Average spring rate (inch/lbs)
Front	Solo	0.5	50	53	62	55
Rear	Solo	0.5	90	90	104	95
Front	Sidecar	0.5	58	60	78	65
Rear	Sidecar	0.5	130	150	170	150

Factory Recommended Position	Type	Wire Diameter(mm)	Length (mm)	ID (mm)	OD (mm)
Front	Solo	6	287	36	48
Rear	Solo	7.1	277	37	52
Front	Sidecar	6.3	274	37	49
Rear	Sidecar	7.7	272	37	53

Factory Recommended Position	Type	Part No.	Scottie's Price
Front	Solo	31 41 2 054 007	31.95
Rear	Solo	33 53 3 054 284	38.45
Front	Sidecar	31 41 2 054 009	34.95
Rear	Sidecar	33 53 3 054 286	40