Promotional Collectables and Apparel› Apparel

MMI Speed Shop

GT45 Edition Single Turbo Kit

$2,168.57

SKU: gt45-edition-for-silverado-sierra-single-turbo-kit-lsx-vortec-4-8-5-3-6-0-6-2_276686142294_

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return

Overview

The MMI Speed Shop GT45 Edition is a single turbo kit designed for LS Vortec powered vehicles. This kit features a brand new GT45 "Street Demon" Series turbocharger and includes all new quality parts. It is capable of producing over 800 horsepower at 25+ PSI with supporting modifications and a built motor. On a stock motor, the kit can provide a 550+ horsepower gain at 8 PSI.
Show original supplier description
The MMI Speed Shop GT45 Edition Single Turbo Kit is designed for LS Vortec powered vehicles with 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L engines. This comprehensive kit features a brand new GT45 "Street Demon" Series turbocharger capable of producing well beyond 800 horsepower at 25+ PSI when paired with supporting modifications and a built motor. For stock engines, the kit offers a significant horsepower gain of 550+ at a low boost setting of 8 PSI. The package includes essential components such as a cast T4 manifold, a front-mount intercooler, a stainless steel crossover pipe, a turbo oiling kit, a blow-off valve kit, a 35/38MM wastegate, and a 4" cone air filter. The intercooler is a lightweight aluminum racing design, and the crossover pipe includes a flex section for enhanced longevity.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandMMI Speed Shop
Part Numbergt45-edition-for-silverado-sierra-single-turbo-kit-lsx-vortec-4-8-5-3-6-0-6-2_276686142294_
CategoryPromotional Collectables and Apparel
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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