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The Scooter Parts Registry

EPA engine family

Engine family RMCIX.391ATA

If this code is printed on your emission label, this is your machine's federal record: sold under Mars Carts Inc., with an engine built by Taizhou Nebula Power Co., Ltd, certified as ATVs.

Displacement
Model years
2024
Models certified
17
Certificates
1

What this record says

Sold in the US by
Mars Carts Inc.
Vehicle category
ATVB-Meeting EPA ATV Definition
Certificate numbers
RMCIX.391ATA-005

Models certified under RMCIX.391ATA

Every model designation the importer listed on this certificate. If your machine's model name appears here, this is the right record — even if the name on the bodywork is slightly different.

Bighorn 380 · Bighorn 400 · Bison 400 · Bison 400L · Bison 400U · Eagle 400 · SRU400U · SRU400U XL · Taurus 4 450 G · Taurus 4 450 U · Taurus 450 G · Taurus 450 U · XY380U-A · XY380U-B · XY450U-A · XY450U-B · XY450U-C

Other American badges on engines from the same factory

Related in the registry

Source. US EPA annual certification data — EPA Certified Highway Motorcycle Test Results, MY2006-present; EPA Certified Off-Road Motorcycle / ATV / UTV / Rec Vehicle, MY2006-present. Retrieved 2026-09-07. Full provenance and method.