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We recommend FedEx as USPS delivery times can vary
Large orders, engines, heads, custom, special order, etc may not ship same day

Note: Due to fraudulent activity, new customers must ship to billing address! Orders received with different shipping addresses will SHIP to the billing address


Hop Up Kit- 212 Predators, Stage 2 Engine, QMA/USAC - GX120, Stage 1
Our Price: $87.99
Our Price: $479.98
Hop Up Kit- 212 Predators, Stage 2 Engine, QMA/USAC - GX120, Stage 1

For those looking to get the maximum performance without opening up the case, we offer our stage 2 kit. Same as our stage 1 kit but with the addition of a bored carb to produce in excess of 10 hp.

Entry Level GX120 Specially prepared for 1/4 Midget Racing but still economical.
Engine Kit, 202cc, 2.186 (+.060) Stroker, 2.68 Bore, Honda Crank & Piston Hop Up Kit - GX200, 6.5 Chinese OHV's, Stage 4
Our Price: $319.99
Our Price: $629.99
Engine Kit, 202cc, 2.186 (+.060) Stroker, 2.68 Bore, Honda Crank & Piston Hop Up Kit - GX200, 6.5 Chinese OHV's, Stage 4
202+cc engine kit for GX200s

Genuine Honda Crankshaft welded and ground producing .060 more stroke, Includes rotating assembly

Our Stage 4+ kits allows you to customize a kit for your application. The 4+ kit starts with package similar to that of the stage 3 kit but adds a Ported and Milled Head, stainless valves, billet rockers, and a serious cam package. Options include everything from roller rockers to stroker kits. This kit will allow you to build a motor in excess of 20+ hp.


KIT INCLUDES:


  • Race/Open Air Filter & Adapter,
  • 22mm Mikuni Carb Kit (other carbs optional)
  • Ported & Milled Chinese OHV Head
  • 1.2 Billet Rocker Arms
  • Chrome Moly Pushrods
  • Stud Kit
  • 26 lb Springs,
  • Lash Caps
  • Offset Timing Key (not with all flywheels)
  • Gasket Kit
  • Billet Rod (not shown in picture), std with Chinese OHVs, .020 with GX200s
  • Billet Guide plate
  • Choice of Compression Ratios - Compression ratios based on Flat-Top piston. If a Dished piston is used, deduct approx 1.5 points,
  • Choice of Cams
  • Optional Long Rod
  • Optional Roller Rockers
  • Optional Flywheels
  • Optional Crankshaft
  • Optional Stroker Kit
Honda Kits use genuine Honda 18cc Heads, Clone Kits use 22cc Clone Heads (Honda kits will fit Clone if 18cc head is desired)


Picture is for reference only!!! Actual content based on above description and selections. In otherwords, the flywheel shown is optional!!
Due to the head work involved in these kits, Allow 1 week to ship

Filter should be sprayed with K&N type oil, especially in dirt applications. Oil not included click here

Note: This kit will not fit Harbor Freight 212 (predator) engines. Please see our Predator Kits for those applications

These kits are intended for experienced engine builders. Some clearancing, fitment, or other engine building "tricks" may be needed.


Aluminum or Honda flywheel recommended. Stock flywheels are prone to failure and very DANGEROUS

Header, RLV NRR5438, GX200, GX160, 6.5 Chinese OHV, & 212 Predator, Mini - Bike Down Draft Style Engine Kit, 202 to 223 cc Kits, 2.186 (+.060) Stroke, Forged Piston - GX200 & 6.5 Chinese OHV's
Our Price: $24.99
Our Price: $399.99
Header, RLV NRR5438, GX200, GX160, 6.5 Chinese OHV, & 212 Predator, Mini - Bike Down Draft Style Engine Kit, 202 to 223 cc Kits, 2.186 (+.060) Stroke, Forged Piston - GX200 & 6.5 Chinese OHV's
1 5/16",  1.050 ID 23" IL.

Same as a  RLV 5438 but bent so that it kicks out to the right side. Allows it to fit most Mini Bikes.

WARNING: Pipe must be supported with a bracket/brace to either the frame or the engine otherwise pipe may fracture or  break.
214 to 223 cc KIT, .060 Stroker Crank with forged piston.

For GX200s and 6.5 BSP "clones". Uses Genuine Honda welded and ground crankshaft. Includes rotating assembly