Murphs' has dealt with enough junk products over the years to fully understand the frustration and annoyance that results, and we are determined to offer only the highest quality products available. SonicSprings fit that requirement.
Warranty & Return Policy
All SonicSprings products carry our NO Hassle warranty. We back our products 100% and offer a full lifetime warranty on our Springs. If, for any reason, you ever have a problem with our products, please contact us immediately for a prompt and courteous refund or replacement.
At Murphs', your satisfaction is our #1 goal!
Normal Street Riding |
Weight |
Spring Rate |
< 165 lbs. |
0.90kg/mm |
165 ? 200 lbs. |
0.95kg/mm |
200 ? 255 lbs. |
1.00kg/mm |
> 255 lbs. |
1.10kg/mm |
Aggressive Street Riding |
Weight |
Spring Rate |
< 170 lbs. |
0.95kg/mm |
170 ? 225 lbs. |
1.00kg/mm |
225 ? 295 lbs. |
1.10kg/mm |
> 295 lbs. |
1.20kg/mm |
Choosing the right rate made easy! Simply examine the chart above, using the rider's weight dressed in all normal riding gear plus the weight of a tank bag if used. Do not include a passenger or any weight carried in saddlebags or a tail trunk. Then select the spring rate that best suits you from the drop down options below.
Available Options:
ZRX Sonic Springs Options: