Suspension and Components› Springs and Components
QA1 Precision Products, Inc
QA1 3-4/5in ID Tapered High Travel Pigtail Spring - 9in Length x 550lbs/in - Silver Powder Coated
SKU: Q00B 9HTSP550
Moderate — 2–4 hours
Description
This spring has a pigtail upper grind and a lower inside diameter of 2-1/2 inches, with an upper inside diameter of 3.80 inches. It is made in the USA.
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 | QA1 Precision Products, Inc |
| Part Number | Q00B 9HTSP550 |
Videos
What Spring Rate Do I Need? - QA1 Quick Tip
Adjusting Your Coilover Spring Seat: What Does It Do? | QA1 Tech
QA1 Mod Shocks: Track Day Performance Tuning
QA1 Handling Suspension Kits
Big Wheel Full Vehicle Kits | QA1
QA1 Coilovers: What They Got Wrong & How We Made It Right
How to Install QA1 Coilovers on F100 with S550 Rear Assembly
How to: Install the 64-72 GM A-Body Rear Coilover Kit
Debunking the Coil-Over Myth: Smooth Rides & Maximum Performance!
QA1 Drag Suspension Kits
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