Description
QA1 3-1/2in ID Tapered Spring - 8in Length x 375lbs/in - Chrome Plated
Additional Information
Coil spring with a 375 lb spring rate. Tapered end. Made with chrome silicon and has a chrome plated finish. 3-1/2" inner diameter and a 8" length.
Part Type
Coil Spring
Product Overview
GREAT APPEARANCE
QA1’s chrome coil springs offer a clean, polished look for your suspension setup. These springs are available in a variety of lengths and rates to suit your build and are designed for use with coil-over shocks. Perfect for hot rods, street rods, and classic builds where style matters as much as performance.
DESIGNED FOR QA1 MUSTANG II COIL-OVER SYSTEMS
With an upper 3.5" inside diameter and lower 2.5" inside diameter, these tapered chrome coil springs are built to fit QA1 Mustang II coil-over conversion systems.
LIFETIME GUARANTEE
All QA1 springs are lifetime guaranteed to remain within 2% of the original free height and rate under normal operating conditions, giving you long-term confidence in your suspension performance.
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 11:54:41
Features
- Designed to be as light as possible with maximum travel and superb performance
- High luster chrome finish offers the ultimate appearance
- Lifetime guarantee to remain within 2% of their original free height
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Product Details
| Brand: | QA1 |
| Color: | Silver |
| Description: | QA1 3-1/2in ID Tapered Spring - 8in Length x 375lbs/in - Chrome Plated |
| End 1 Type: | Flat |
| End 2 Type: | Flat |
| Free Height: | 8 |
| Grade Type: | Performance |
| Height: | 200 |
| Length: | 200 |
| Load Rate: | 375 |
| Manufacturer Part Number: | 8MB375 |
| Material: | Chrome Silicon Alloy |
| Maximum Inside Diameter: | 2.5 |
| Part Number: | qap8MB375 |
| Seat Included: | No |
| Spring Load: | 375 |
| Spring Rate: | 375 |
| Spring Type: | Coilover |
| Suspension Grade Type: | Performance |
| Title: | QA1 Coil Spring 8MB375 |
| UPC: | 806990026279 |
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Qa1 |
| StreetFX SKU | qap8MB375 |
| SFX Item ID | 4092662 |
| Accounting SKU | qap-8MB375 |
| Manufacturer SKU | 8MB375 |
| Manufacturer UPC | 806990026279 |
| Alternative References | 8MB375, QA1-8MB375 |
Coilover Spring, Mustang II, 375 lbs./in. Rate, 8 in. Length, 3.50/2.50 in. I.D., Chrome Plated, Each
Springs for the stresses of racing! QA1 coil springs are designed to withstand the high-stress levels of modern suspensions. They are manufactured from high-quality chrome silicone steel, heat-treated and shot-peened, and then powdercoated or plated for protection and appearance. Each spring is guaranteed to be within five percent of its advertised rate.
| Product Attributes | |
|---|---|
| Brand | QA1 |
| Manufacturer's Part Number | 8MB375 |
| Part Type | Coilover Springs |
| Product Line | QA1 Coil Springs |
| UPC | 806990026279 |
| Coilover Spring Inside Diameter (in.) | 2.500-3.500 in. |
| Coilover Spring Inside Diameter (mm) | 63.50-88.90mm |
| Coilover Spring Length (in.) | 8.000 in. |
| Coilover Spring Length (mm) | 203.20mm |
| Progressive Rate Spring | No |
| Coilover Spring Rate (lbs/in) | 375 lbs./in. |
| Spring Finish | Chrome |
| Quantity | Sold individually. |
| Notes | Designed for models with a Mustang II independent front suspension. Lower I.D. 2.50 in. Upper I.D. 3.50 in. |
| Manufacturer Attributes | |
|---|---|
| Title | QA1 Coil Spring 8MB375 |
| Brand | QA1 |
| Manufacturer Part Number | 8MB375 |
| UPC | 806990026279 |
| Manufacturer Designation | Spring Chrome Silicon 3-1/2 Id 8-375 Lbs Chrome Plated 1St Coil Tapered |
| Product Class | Coil Spring |
| Construction/Type | Coil spring with a 375 lb spring rate. Tapered end. Made with chrome silicon and has a chrome plated finish. 3-1/2" inner diameter and a 8" length. |
| Product Outline | Lifetime guarantee to remain within 2% of their original free height Designed to be as light as possible with maximum travel and superb performance High luster chrome finish offers the ultimate appearance |
| Vehicle Brief | QA1 Chrome Coil Spring |
| Market Description | QA1's Mustang II Pro Coil Kits feature polished and chrome plated springs. They have a 3.5" upper I.D. and 2.5" lower I.D., these springs have an 8" free length and are offered in four rates. Made with the highest quality materials, QA1 springs are strong, consistent and have a long life. All QA1 springs come with a lifetime guarantee to remain within 2% of their original free height and rate, so you know you're getting quality springs with QA1. Chrome Silicon Steel (CrS), All QA1 springs are manufactured using the highest quality materials for high strength, consistency and long life. Cold Wound - Heat Treated - Shot Peened, All QA1 springs go through intensive manufacturing processes to ensure consistency, accuracy and durability. Squared Ends, All QA1 springs are ground at both ends to ensure straight, consistent and accurate operation. Protective Coated, The Mustang II Springs are polished and chrome plated for the ultimate in appearance. Lengths and Rates Marked, All QA1 springs are clearly marked with the free length of the spring and spring rate for quick and easy identification. LIFETIME GUARANTEE, All QA1 springs are lifetime guaranteed to remain within 2% of the original free height and rate under normal operating conditions. |
Compatibility
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