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Qa1

QA1 4-1/8in ID Tapered High Travel Spring - 10in Length x 650lbs/in - Silver Powder Coated

SKU: QAP10HTBF650

Coilover Springs

QAP Springs - 4-1/8 ID...

Qa1

QA1 4-1/8in ID Tapered High Travel Spring - 10in Length x 650lbs/in - Silver Powder Coated

SKU: QAP10HTBF650

Coilover Springs

QAP Springs - 4-1/8 ID...

A$235.20
Available from MFR. This item is available from the manufacturer's distribution centre. The dispatch timeframe shown is an estimate based on historical order processing and release times for this part. This item is not held in our own warehouse, and actual dispatch timing may vary depending on manufacturer workload and logistics at the time of ordering.
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Description

QA1 Pro coilover springs fit perfectly with QA1's front Pro Coil Shock Systems. These springs are available with flat or pigtail ends and in 10 or 11 in. free lengths. Made with the highest quality materials, QA1 springs are strong, consistent, and have a long life. Order the style, size, and spring rate options needed for your application.

Additional details:

* Chrome Silicon steel (CrS) construction for high strength, consistency, and long life
* Cold wound, heat-treated, and shot peened to ensure consistency, accuracy, and durability
* Silver powdercoated for excellent longevity
* High Travel (HT) options have fewer coils and a smaller wire diameter; as a result, they're lighter and have increased travel due to the larger distance between the coils. They reduce unsprung weight and react faster, optimizing suspension performance
* Springs are clearly marked with the free length of the spring and spring rate for quick and easy identification
* All QA1 springs are lifetime guaranteed to remain within 2 percent of the original free height and rate under normal operating conditions
* For Mustang struts or rear Pro Coils, see QA1's 2.5 in. I.D. springs

Product Overview

Available in 7", 9", 10", 12", 14" and 16" lengths, QA1 offers an assortment of high travel springs with a silver powder coated finish. Made in the USA, these 2" I.D. high travel springs are manufactured from specially designed high-tensile, chrome silicon alloy spring wire, which allows them to have fewer coils and a smaller wire diameter. As a result, these springs are lighter and have increased travel due to the larger distance between the coils. These lighter springs reduce unsprung weight and react faster, optimizing suspension performance. In addition, this high-grade material, along with careful heat-treating and post-processing, allows for greatly improved fatigue life, and the coil design allows the springs to be compressed to coil-bind without affecting spring rate or free height. These new high travel springs are silver powder coated and ground at both ends for straight, consistent and accurate operations. In addition, all QA1 springs are lifetime guaranteed to remain within 2% of the original free height and rate under normal operating conditions. Chrome Silicon Steel, 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. 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. Made in the USA, QA1's high travel springs are proudly made in the USA. LIFETIME GUARANTEE, All QA1 springs are lifetime guaranteed to remain within 2% of the original free height and rate under normal operating conditions.


Features and Benefits

  • Lifetime guarantee to remain within 2% of their original free height
  • Designed to be as light as possible with maximum travel and superb performance
  • Durable powdercoated finish
  • Made in the USA

Product Details

Brand:QA1
Color:Silver
Description:QA1 4-1/8in ID Tapered High Travel Spring - 10in Length x 650lbs/in - Silver Powder Coated
End 1 Type:4.1in ID Flat
End 2 Type:2.5in ID Flat
Finish:Powder Coated
Free Height:10
Grade Type:Performance
Manufacturer Part Number:10HTBF650
Material:Chrome Silicon Alloy
Maximum Inside Diameter:2.5
Part Number:qap10HTBF650
Prop 65 - Short Label:WARNING: Cancer and Reproductive Harm. www.P65Warnings.ca.gov
Prop 65 Yes/No:Yes
Seat Included:No
Spring Rate:650
Spring Type:Tapered Spring Powder Coated
Suspension Grade Type:Performance
Title:QA1 Coil Spring 10HTBF650
UPC:806990119698

Part Type

Coil Spring

Data: v4.2 - Upd: 2026-10-13 18:04:42

Features

  • Designed to be as light as possible with maximum travel and superb performance
  • Durable powdercoated finish
  • Lifetime guarantee to remain within 2% of their original free height
  • Made in the USA

Specifications

Product Attributes - Brand
QA1
Product Attributes - Manufacturer's Part Number
10HTBF650
Product Attributes - Part Type
Coilover Springs
Product Attributes - Product Line
QA1 Pro Coilover Springs
Product Attributes - UPC
806990119698
Product Attributes - Coilover Spring Inside Diameter (in.)
2.500-4.100 in.
Product Attributes - Coilover Spring Inside Diameter (mm)
63.50-104.14mm
Product Attributes - Coilover Spring Length (in.)
10.000 in.
Product Attributes - Coilover Spring Length (mm)
254.00mm
Product Attributes - Progressive Rate Spring
No
Product Attributes - Coilover Spring Rate (lbs/in)
650 lbs./in.
Product Attributes - Spring Finish
Gray/Silver
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Spring style C. Tapered coil spring with flat style spring ends. Used in GD, GR, GS, and MG Pro coilover systems. Lower I.D. 2.50 in. Upper I.D. 4.10 in.

Reference Information

Brand Name/s Qa1
StreetFX SKU qap10HTBF650
SFX Item ID 4091550
Supplier Item Code 4091550
Manufacturer SKU 10HTBF650
Manufacturer UPC 806990119698
Alternative References qa1, QA1-10HTBF650, 4-1/8in, 10in, 650lbs/in

Compatibility

Application Data
  • UniversalYes
  • MakeBUICK
    ModelAPOLLO
    SubmodelBASE
    Beginning Year1975
    Ending Year1975
    Engine TypeL6
    Engine Size4.1L/250
    Engine FamilyGM inline 6-cylinder
    Liter4.1
    CID250
    DrivetrainRWD
    Engine VIN CodeD
  • MakeBUICK
    ModelAPOLLO
    SubmodelBASE
    Beginning Year1975
    Ending Year1975
    Engine TypeV8
    Engine Size4.3L/260
    Engine FamilyOldsmobile V8
    Liter4.3
    CID260
    DrivetrainRWD
    Engine VIN CodeF
  • MakeBUICK
    ModelAPOLLO
    SubmodelBASE
    Beginning Year1975
    Ending Year1975
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    Liter5.7
    CID350
    CC5733
    DrivetrainRWD
    Engine VIN CodeH
  • MakeBUICK
    ModelAPOLLO
    SubmodelBASE
    Beginning Year1975
    Ending Year1975
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    Liter5.7
    CID350
    CC5733
    DrivetrainRWD
    Engine VIN CodeJ
  • MakeBUICK
    ModelAPOLLO
    SubmodelSR
    Beginning Year1975
    Ending Year1975
    Engine TypeL6
    Engine Size4.1L/250
    Engine FamilyGM inline 6-cylinder
    Liter4.1
    CID250
    DrivetrainRWD
    Engine VIN CodeD
  • MakeBUICK
    ModelAPOLLO
    SubmodelSR
    Beginning Year1975
    Ending Year1975
    Engine TypeV8
    Engine Size4.3L/260
    Engine FamilyOldsmobile V8
    Liter4.3
    CID260
    DrivetrainRWD
    Engine VIN CodeF
  • MakeBUICK
    ModelAPOLLO
    SubmodelSR
    Beginning Year1975
    Ending Year1975
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    Liter5.7
    CID350
    CC5733
    DrivetrainRWD
    Engine VIN CodeH
  • MakeBUICK
    ModelAPOLLO
    SubmodelSR
    Beginning Year1975
    Ending Year1975
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyOldsmobile V8
    Liter5.7
    CID350
    CC5733
    DrivetrainRWD
    Engine VIN CodeJ
  • MakeBUICK
    ModelCENTURION
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Liter7.5
    CID455
    CC7456
    DrivetrainRWD
  • MakeBUICK
    ModelCENTURION
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Liter7.5
    CID455
    CC7456
    DrivetrainRWD
  • MakeBUICK
    ModelCENTURION
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Liter7.5
    CID455
    CC7456
    DrivetrainRWD
  • MakeBUICK
    ModelCENTURION
    SubmodelBASE
    Beginning Year1971
    Ending Year1973
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Liter7.5
    CID455
    CC7456
    DrivetrainRWD
    Engine VIN CodeU
  • MakeBUICK
    ModelCENTURION
    SubmodelBASE
    Beginning Year1972
    Ending Year1973
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Liter7.5
    CID455
    CC7456
    DrivetrainRWD
    Engine VIN CodeT
  • MakeBUICK
    ModelCENTURION
    SubmodelBASE
    Beginning Year1972
    Ending Year1973
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Liter7.5
    CID455
    CC7456
    DrivetrainRWD
    Engine VIN CodeV
  • MakeBUICK
    ModelCENTURION
    SubmodelBASE
    Beginning Year1972
    Ending Year1973
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Liter7.5
    CID455
    CC7456
    DrivetrainRWD
    Engine VIN CodeW
  • MakeBUICK
    ModelCENTURION
    SubmodelBASE
    Beginning Year1973
    Ending Year1973
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyBuick V8
    Liter5.7
    CID350
    DrivetrainRWD
    Engine VIN CodeH
  • MakeBUICK
    ModelCENTURION
    SubmodelBASE
    Beginning Year1973
    Ending Year1973
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyBuick V8
    Liter5.7
    CID350
    DrivetrainRWD
    Engine VIN CodeJ
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyBuick V8
    Liter5.7
    CID350
    DrivetrainRWD
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyBuick V8
    Liter5.7
    CID350
    DrivetrainRWD
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyBuick V8
    Liter5.7
    CID350
    DrivetrainRWD
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Engine Size5.7L/350
    Engine FamilyBuick V8
    Liter5.7
    CID350
    DrivetrainRWD
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Liter7.5
    CID455
    CC7456
    DrivetrainRWD
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Liter7.5
    CID455
    CC7456
    DrivetrainRWD
  • MakeBUICK
    ModelLESABRE
    SubmodelBASE
    Beginning Year1971
    Ending Year1971
    Engine TypeV8
    Engine Size7.5L/455
    Engine FamilyBuick V8
    Liter7.5
    CID455
    CC7456
    DrivetrainRWD

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