Smooth out the ride and keep a higher-riding truck planted with the Monroe Reflex Front Suspension Shock Absorber 911151. It installs as a direct-fit front shock for the 1999-2006 Chevrolet Silverado 1500, 2007 Chevrolet Silverado 1500 Classic, 1999-2006 GMC Sierra 1500, and 2007 GMC Sierra 1500 Classic — see the Buyer's Guide tab for engine-level fitment.
- ASD valving: Acceleration Sensitive Damping technology adjusts to impacts, helping reduce vehicle roll and dive for vehicles with a higher center of gravity.
- Full displaced valving: Tuned to each vehicle and paired with a larger bore for more efficient damping control and a smooth, consistent ride.
- OE all-weather fluid: Special additives help handle temperature extremes and reduce oil breakdown, while a larger reserve tube holds more fluid to run cooler.
- Fluon-banded piston & nitrogen charge: Consistent sealing between piston and pressure tube, plus a nitrogen gas charge that helps maintain tire-to-road contact by reducing aeration.
A self-lubricating fluid seal retains gas and reduces friction against the piston rod to help limit premature wear. Backed by Monroe's Limited Lifetime Warranty and Feel the Difference Guarantee. Shocks work as a pair — replace both front units together for balanced control.
Frequently Asked Questions
What vehicles does the Monroe 911151 fit?
It's a front shock for the 1999-2006 Chevrolet Silverado 1500, 2007 Silverado 1500 Classic, 1999-2006 GMC Sierra 1500, and 2007 Sierra 1500 Classic. Check the Buyer's Guide tab to confirm your vehicle.
Is this a front or rear shock absorber?
It is cataloged as a front suspension shock absorber for the listed applications.
What is ASD valving?
Acceleration Sensitive Damping is valving technology that automatically adjusts to impacts, helping reduce vehicle roll and dive on trucks with a higher center of gravity.
Should I replace shocks in pairs?
Replacing both front shocks together is recommended for balanced, even damping. Each unit is sold individually, so order two for a complete front-axle replacement.
What are signs my shocks may need replacing?
Excessive bouncing, nose dive under braking, body roll in turns, uneven tire wear, or fluid leaking from the shock body are common signs the shocks may need replacing.
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