Which J&B Motorsport, Inc models have a Chinese-built engine?

1 of the 28 US certificate filings on record for J&B Motorsport, Inc name an engine manufacturer in China, across 2007: Zhejiang Wanjin Industry Co Ltd. The rest of the range is built elsewhere and is not covered by this registry.

Will parts from another brand fit my J&B Motorsport, Inc?

A shared factory and engine size makes another brand a strong candidate, but it does not prove the part numbers match. These machines are assembled from multiple component suppliers, so measure the part you have before ordering a replacement.

US certificate holder — partial coverage

Which J&B Motorsport models have a Chinese-built engine?

1 of the 28 certificate filings on record for J&B Motorsport, Inc name a China-built engine. This page covers only those, and says nothing about the rest of the range.

Model years: 2007
Engine factories: 1
Engine families: 1
Coverage: 1 of 28 filings

The factory behind the China-engine models

Zhejiang Wanjin Industry Co Ltd
Also builds engines for 0 other American brands.

Model names certified under J&B Motorsport, Inc

6 distinct model designations appear on this brand's China-engine certificates. Yours should be among them — importers sometimes market a machine under a different name than the one they certified.

WJ110ST · WJ70ST · WJ70ST-2 · WJ90ST · WJ90ST-2 · WJGK110ST

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. Based on the 1 China-engine rows among 28 certificate rows filed by J&B MOTORSPORT, INC. Non-China filings are out of scope. Full provenance and method.