Whipple Superchargers Gen 6 3.0L Supercharger Kit - L87 (WK-1211-30)

Fits 2019-2026 6.2L V8

Whipple Superchargers Gen 6 3.0L Supercharger Kit - L87 (WK-1211-30) for 2019-2026 GMC Sierra 1500 (6.2L V8)

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gain
up to 685 hp at 7 psi on 93 octane / up to 655 lb-ft at 7 psi on 93 octane
approx +170 hp over stock 420 hp
price
$7,899.99
at Phastek Performance
about its usual price

Price tracked 8 times since Jul 26, 2026 across the stores we check daily: low $7,899.99, high $8,499.99, currently $7,899.99.

low $7,899.99 · high $8,499.99 since Jul 26, 2026, across the stores we check daily
install
5/5 difficulty · ~12-20 hrs (pro install strongly recommended)

where to buy · 3 retailers tracked

  • Phastek Performancebest pricechecked Sep 4$7,899.99view
  • Hawks Motorsportschecked Aug 31$8,399.99view
  • Beefcake Racingchecked Aug 5$9,699.99view

A supercharger is a belt-driven air pump bolted directly to the top of the engine that force-feeds it more air than it could pull in on its own.

why this one — Whipple's Gen 6 3.0L twin-screw kit is the T1XX-generation L87 successor, CARB certified and confirmed for both Chevrolet Silverado and GMC Sierra 1500, with a real, specific claimed number (up to 685 hp/655 lb-ft) rather than a vague pitch.

where the number comes from

Whipple's own product page states "up to 685 horsepower and 655 lb-ft of torque" on 93 octane at 7 psi boost for this kit.

heads up

CARB EO# D-231-143 per Whipple's own product page. Major forced-induction upgrade - expect a supporting-mods conversation and potential powertrain warranty impact.

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Gain shown is a manufacturer claim, not a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See how we check a price and our affiliate disclosure.

Independent site. Not affiliated with, endorsed by, or sponsored by any vehicle manufacturer, parts manufacturer, or retailer named on this site. Vehicle and brand names are used only to describe compatibility. Gains shown are manufacturer claims, community estimates, or independent tests, labeled by source on every part, and are not guarantees.