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Outlet store

Open-box returns, end-of-line stock and reduced prices, all in one place. Every outlet part is inspected before it ships and carries the same 12-month warranty as full-price parts. Quantities are limited.

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Gift cardsTools and calculatorsCatalogsInstallation instructions

Performance and aftermarket parts

Performance parts, shipped today.

0 parts for Chevy, Ford, GM LS and Mopar builds, from gaskets to crate engines. Free shipping on orders over $150.

Today's deals Popular: Intake manifoldsCylinder headsIgnition kitsSuperchargers

Free shipping over $150Same-day dispatch before 3 pmTrack every order onlineMilitary & first-responder pricing

Today's deals

Special pricing, while stock lasts.

See all deals

Shop by department

Everything between the bumpers.

Eight departments, with fitment notes on every part and a part number you can reorder by.

Quick links
Intake manifoldsDowndraft manifoldsComplete cylinder headsIgnition kitsRoller rockersInstall instructions

The store

On the shelf right now.

Best sellers, special pricing, clearance and outlet stock. Everything marked in stock ships today.

Full catalog

Browse every department.

0 parts across eight departments. Pick a category, filter by engine, sort by price, and open any part for a closer look.

Assembly · Complete systems

Matched on our bench. Ready to fit.

Crate engines, top end kits, supercharger kits and ignition systems assembled and checked before they ship, so every component arrives already working together.

ROTOR A 3-LOBE INJECTOR HAT DRIVE CASE 248 MM
Fig. 1 · 6-71 roots blower9.5 psi at 6,000 rpm

More ways to save

Outlet, offers and discounts.

Outlet store
−40% up to

144 refurbished and clearance parts

Open-box returns and end-of-line stock, inspected and covered by the same warranty.

Shop the outlet Special pricing
0parts reduced

Special pricing

Reduced prices across every department while stock lasts.

See the offers Military & emergency services
10% every order

Thank-you pricing

Verified service members, police, fire and ambulance crews save on every order, on top of rewards points.

Verify once

Merchandise

Gear for the shop floor.

Motor Base apparel, drinkware, signage and gifts, in the same black, red and gold as the store.

Rewards

Every dollar builds your status.

One point per dollar, double and triple on selected parts, across seven tiers from Red to Black. Once you reach a tier it holds for a full year, and Gold and above get a dedicated account manager.

$3,400
3,400Points
$2,600To next tier
Yellow

Test drive game

Pick a car. Drive the city.

Take a supercharged muscle coupe, a big-block classic, a V8 pickup, a turbo rally sedan or our concept car for a spin around a 3D city. Every car has its own engine sound, gearing and grip, and you shift with a real clutch.

Optional and free. The game only loads when you press play. Open it full screen.

Complete automobiles, built to order

Tools & resources

Measure twice. Order once.

Install guides, catalogs and engine calculators. The calculators are pre-filled with a typical 350 small block.

Installation instructionsSearch a part number, or ask us to email its install guide. CatalogsBrowse every department online, or ask for a printed copy. CalculatorsCompression ratio and trap-speed horsepower, below.

Compression ratio

9.80Ratio : 1
355Cubic inches
5.8Litres

Pump-gas friendly on 91 octane.

Trap-speed power

373Wheel hp
12.2Est. ¼-mile, s

Uses the classic trap-speed formula. A ballpark figure, not a dyno sheet.