Suspension and Components› Springs and Components
Progressive
Progressive 03-1331B Mag Spring 70-130B
SKU: P0BV 03-1331B
Easy — 1–2 hours
Description
Constructed in black, these 13-inch springs are intended to soften or firm up your ride and serve as a replacement for tired old springs.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Progressive |
| Part Number | P0BV 03-1331B |
Videos
Progressive Suspension Overview
Progressive 412 Series Shocks Review at RevZilla.com
Progressive 412 Series Shocks
Progressive Suspension 422 Shocks Review at RevZilla.com
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Progressive Suspension 412 Series Shock
Progressive Suspension 430 Shocks Review at RevZilla.com
Sportster Heavy Duty progressive 412 shocks - Install and review
BIKERS CHOICE Progressive Suspension Shocks Rear Installation at Motorcycle-Superstore.com
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy