Most shocks limit you to whatever the adjusters can reach. The MOD Series adds a second layer of tuning on top of that: the valve packs themselves come out and swap while the shock stays bolted to the car, so a track that changes through the day does not mean pulling shocks and sending them out to be revalved.

QA1 M711PL MOD Series Double Adjustable Coil-Over Shock Features:

• Double adjustable with an adjustable low speed bleed for independent compression and rebound control.
• QuickTune dry modular valve packs swap out without opening the shock or interrupting the oil path.
• Medium compression and rebound valve packs fitted as standard, with soft and firm packs available separately.
• Left-hand piggyback canister.
• 12.880 in. compressed height and 19.500 in. extended height for 6.630 in. of travel.
• Bushing eyelet at the top and bottom.
• Dual tube aluminum body in black.
• Coil spring is not included.
• Sold individually.