Cyber Sale

Engine, Racing, 440cc Open Class, Package 4, Hemi Head

$2,004.00
$2,569.00

All out race 440 great for Kart or Mini-Bike Drag Racing.

With over 35hp, this engine will pull hard from 3500 to over 7500 rpm. Engine Includes:

440cc Race Prepped Assembly
Electric Start (no charging circuit)
Open Element K&N Style Air Filter
Removal of governor
Dual Valve Springs
Billet Flywheel
Ported & milled Head
3 angle Valve Job
34mm Mikuni carb
Roller Rockers
Forged Flat-top Piston w/high Compression
307 Lift Cam
Stainless Oversize Valves w/Aluminum Retainers
Chrome Moly Pushrods
Billet Rod
ARP Bolt Kit (Head & Side)
Billet Valve Cover
Billet Side Cover
Dyno Tested

Options:

Balance Engine
Billet Crank
92mm Piston w/ 10 bolt Block for 460cc
Optional Carbs
PVL Ignition (recoil start)

*All race engine orders may take up to 4-6 weeks before shipping.

Note: The 10 bolt block used on the 92mm Combo has larger mounting plate dimension. Also, engine will be taller and heavier than the 420/440cc set-ups.

MOTORS SOLD FOR ORGANIZED COMPETITION PURPOSES OR EXPORT ONLY . (NOT FOR USE ON ANY EQUIPMENT, OFF ROAD, RECREATIONAL, OR EMISSIONS CONTROLLED APPLICATIONS. DOING SO IS A VIOLATION OF FEDERAL LAW) .

WARNING: TO PREVENT SERIOUS INJURY AN ALUMINUM FLYWHEEL SHOULD BE USED ON ALL MODIFIED MOTORS

Unless Stated, Engines do not come with Tank, Muffler/Exhaust, or Linkage. Filter should be sprayed with K&N type oil, especially in dirt applications. Oil not included click here

Picture for reference only, Color/style may vary

FAQ Accordion with Animation

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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Engine, Racing, 440cc Open Class, Package 4, Hemi Head

Frequently Asked Questions

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