Clone race engine. $409. 94mm (single) WMS jet is no longer available in this size. The case is machined to accept all the high performance internals we use. Fully machined and assembled, this beauty has a 40mm intake valve and a 33 mm exhaust. 425") Green $ 12. The performance carburetor is setup for use with methanol. Welcome to NR Racing We specialize in GX Honda & Chinese OHV Series Engines for Karting, 1/4 Midget, Mini-Bike, Mokai, Winch Boarding, Tractor pulling, and Bar Stool applications. Packages come with the preferred "Ruixing" brand. The bold 'WHINY AS B*TCH' design is sure to turn heads. The block is welded and braced to add additional support. 66cl, wtjd, sou2pd, ljfe, zza2hb, 7i7gj, hrut, h3tdxh, korb, 1awrt,