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Load image into Gallery viewer, Stage 4 Hop Up Kit for 212 Predator Hemi Engines

Cyber Sale

Speed Kit, 212 Predator Hemi - (Choose Options) Stage 4

$354.00
$453.00

For serious engine builders looking for great power and good reliability, we offer our Stage 4 kit! This package is similar to our Stage 3, but adds a ported and milled hemi head, stainless steel valves, billet rockers, and a great all-around camshaft package. Allows up to 20hp or more!

Kit Includes:

Ported and Milled Head
Approximately 10:1 Compression Ratio for Use with Pump Gas
Stainless Steel, High-Flow 28mm Intake and 25mm Exhaust Valves
37lb Springs
1.2 Ratio Billet Steel Rocker Arms
Chrome Moly Pushrods
280-0611 Camshaft
Stud Kit
Lash Caps
Long Billet Rod (+.020")
Complete Gasket Kit
Carburetor Option
Optional Flywheel

*Note: This kit will not fit non-hemi Predator engines. Please see our non-hemi kits for those applications. These kits are intended for experienced engine builders. Some clearancing, fitting, and other engine building "tricks" may be necessary. Filter should be sprayed with K&N type oil, especially for dirt applications. Picture is for reference only. Actual content is based on above description and selections. The flywheel shown is optional.

Aluminum flywheel required. Stock flywheels are prone to failure and are very dangerous!

Due to the head work involved in this kit, please allow 1 week before shipping.

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Frequently Asked Questions

When will my order be shipped and how long does delivery take?

Orders containing in-stock items typically ship within 3–5 business days. Orders that include assembly will require 7–10 business days to prepare. Please note that during the holiday season (Thanksgiving through Christmas), processing times may be longer due to high order volume. Once your order has shipped, you’ll receive an email with tracking information. Most orders are shipped via Less Than Truckload (LTL) freight and generally arrive within 3–7 business days. Deliveries to remote areas (such as mountains, forests, valleys, or islands) may take longer. You can check the estimated delivery date on the carrier’s website using the tracking number we provide.

How your vehicle is shipped?

Unless otherwise noted, the vehicles we offer are shipped crated or on a pallet and do not come assembled unless you’ve selected our assembly service. Assembly typically requires a few basic tools and mechanical knowledge. If you're not confident in your ability to safely assemble a high-speed off-road vehicle, we strongly recommend selecting professional assembly or having it assembled by a local mechanic.

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Do you offer financing?

Yes. Buy-now-pay-later financing is available with our preferred partner, BreadPay® (please see their icon under product pricing for details).

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How can I get assistance if I have question on products?

Please call 888-886-5846 and talk to one of our knowledgeable sales representatives between 9am-3pm PST. Or send us email at orders@gokartsusa.biz.

What warranty is included with my purchase?

You're covered with confidence at GoKarts USA®. Your satisfaction is our top priority. Every purchase comes with manufacturer-backed warranty protection—including up to 12 months of engine coverage—to keep your ride running strong. TrailMaster products also include a 6-month parts warranty for added peace of mind.

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What does 95% or 98% Assembly Mean? What do I need to assemble if shipped in crate?

For shipping safety, most vehicles cannot be fully assembled prior to delivery.

Minor assembly is required—this typically includes installing mirrors, connecting the battery, adjusting handlebars, and other small components. Before operation, please ensure all screws and fasteners are tightened, engine fluids are at proper levels, and the battery is fully charged. Your factory warranty remains valid right out of the box.

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Speed Kit, 212 Predator Hemi - (Choose Options) Stage 4

Frequently Asked Questions

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