Air and Fuel› Superchargers, Turbochargers and Components

Trick Flow

GenX Top-End Engine Kit

$3,899.99

SKU: TFS-K305-455-425

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
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Overview

The Trick Flow GenX Top-End engine kit is designed for GM LS trucks, offering a 455 hp and 426 ft.-lbs. of torque upgrade. This kit features aluminum cylinder heads with CNC-machined combustion chambers and ported runners for improved airflow. It also includes a hydraulic roller camshaft and Trick Flow chromoly pushrods.
Show original supplier description
The Trick Flow GenX® 455 HP Top-End Engine Kits are engineered to boost the performance of GM LS-powered trucks. The kit includes a Track Max® hydraulic roller camshaft with specific duration and lift specifications (216 int./220 exh. duration at 0.050 lift, 0.560 in. valve lift) and Trick Flow® one-piece chromoly pushrods. Also included are shaft mount roller rockers, bolts, and gaskets, with cylinder heads constructed from cast aluminum and featuring 58cc combustion chambers and 205cc intake runners. Installation of this kit requires aftermarket tuning for optimal performance. The components within these kits are matched to potentially add 50-75 horsepower to your LS-powered truck, offering a significant performance upgrade for applications such as 5.3L Chevy trucks.

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

BrandTrick Flow
Part NumberTFS-K305-455-425
CategoryAir and Fuel

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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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