Suspension and Components› Shocks, Struts, Coil-Overs and Components
QA1 Precision Products, Inc
QA1 MOD Series Coil-Over Shock Absorber - Remote - Left Hand - Bearing Mount - 10.625in/15in
SKU: Q00B M421CL
Moderate — 2–4 hours
Description
Part #: M421CL
Don't be limited to adjustments! Completely re-valve in minutes with the MOD Series shock. Designed specifically to meet the demands required by today's high performance drag race and handling/pro-touring cars, QA1's multi-patent-pending MOD Series shock will transform the way racers respond to changing track conditions and configurations. The key element to this tunability is QuickTune Technology: dry modular valve packs that can easily be swapped out, all while the shock remains on the car. An industry first, the MOD Series shock can quickly and easily be revalved without interrupting the oil path or opening the shock up for debris and air contamination. Medium compression and rebound valve packs come standard
Features:
- 4-way adjustable high and low speed bleed
- QuickTune Technology: dry modular valve packs that can easily be swapped out
- Valve packs shock can quickly and easily be revalved without interrupting the oil path or opening the shock up for debris and air contamination
- Remote or piggyback canister mounting options
- 100% dyno tested and serialized
- Made in the USA
MOD Series double adjustable with low speed bleed custom mount coil-over shock, left-hand remote canister. Compressed height of 10.63", extended height of 15". Bushing top and bushing bottom.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
Fitment
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Available on iOS & Android
Specifications
| Brand | QA1 Precision Products, Inc |
| Part Number | Q00B M421CL |
Videos
MOD™ Series Shocks from QA1
QA1 MOD™ Series: QuickTune™ Technology
QA1 Mod Shocks: Track Day Performance Tuning
QA1 Shocks, Mod Series Double Adjustable
How Mod Series Shocks Work and How to Adjust Them - Info Straight from QA1!
QA1 Shocks Any Good? Lets Test Them Out.
QA1 Coilovers: What They Got Wrong & How We Made It Right
Will Raising the Spring Seat Stiffen My Ride? - QA1 Quick Tip
Adjusting Your Coilover Spring Seat: What Does It Do? | QA1 Tech
Installation of the New QA1 Mod Series Coilover Shock
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.
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