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Cyber Sale

Billet Cylinder Head for Small Block GX160,200 & Clone Engines, With Big Valve

$557.00
$714.00

This billet head cylinder supports .500' lift with no modifications. Accepts all stock height components. Aftermarket pushrods and valve cover or spacer, and black venom rockers required.

MoFlow-1 by BlackMarkit

The new Moflow has been completely reworked to accept "bigger" valves, utilizing a 36mm intake valve and a 27mm exhaust. The valve spacing has been widened to safely accommodate the larger valves, along with the rocker stands to keep everything lined up. The intake bolts have been changed from the 43mm spacing to a wider 46mm spacing to allow for the bigger port. Material added on the spark plug side head bolts to move the bolt pattern if needed for larger bores. Long 3.100" stainless valves with Comp Cams GP965 springs and Titanium retainers.

Must use billet valve cover or valve cover spacer for clearance. Must use Blackmarkit intake (found here) or modify intake for 46mm spacing. Recommend 1/4" x 5.5" pushrods (length may vary, depending on rockers). Designed to be used with Gage Motorsports Black Venom rocker arms.

Designed for 3" bore (2.98" chamber)
15cc chamber (methanol or gas)
3.100" stainless valves
Comp Cams GP965 springs
Titanium retainers
Wider valve spacing
Wider rocker spacing
Wider intake bolt pattern (46mm)
Improved Intake and Exhaust port Design.
Extra Material to move head bolts (extreme builds)

Manifolds designed for this head
Intake Flow at 28"

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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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Billet Cylinder Head for Small Block GX160,200 & Clone Engines, With Big Valve

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