This the new StarFire Gen III > New Design; More power! Available in both 48cc & 70cc New GEN IIIengines just released, "70cc SuperRat and 48/50cc SuperMouseGEN III Gas Engine Kit: Pedal start friction clutch engine; Turns abike into a Moped: GEN III Complete kit ready to install on 26” Vee frame and Beach Cruiser type Bikes. GEN III is available only through China GAS ;Mfg. by Nantong JiaLito China GAS specs. As of Sept 4, 2010 China GAS is the exclusive sales and marketing arm for JiaLi. All mailabout bicycle engines sent to JiaLi is now forwarded to us for reply in English. Don't be fooled by copies that look alike with angle plug head on an old design engine The Original GEN II engine has a steel sleeved piston cylinder for extra long life The new GEN III has a chromed cylinder.GEN III carburetors can be flange mounted or a CNS carb. can hang on anintake tube. GEN III Crankshaft bearings are 203 sizenot the small 202 as found in all other engines. GEN III has 8mm dia. down tube mounting studs . Other engines use 6mm dia. GEN III has a 2 psc. crankshaft flywheel with oversized oil seals on both sides. Yes; these engine kits cost a little more but you get a lot more; 90 day end user factory warranty supported by China GAS to the WD: JiaLi is an old grandfather bike engine factory going back past 2000 when we first met All service parts available: English instruction sheet made by Don Grube / Gru-Bee inc. Sold only to qualifying Distributors in container load quantities China factory direct: See our www.grubeeinc.com web site for the many kit Options Available: GEN III Kits includes everything needed to convert a V frame standard bike into a MoPed. Spec. your kits the way you want for your particular market area. Optional: Bottle Canister hook up to intake tube forKick Ass Total Combustion Control, Optional: Street poo poo pipe , Optional: Expansion chamber exhaust, Optional:56 T, 50T, 44T, 36T rear wheel sprockets: Heavy duty 415 chain: Optional: Rear gas tank with rack or choose a top bar mounted 4 liter gas tank; Optional: Patented HyBriPed sprocketwith2 pull pinsfor easy bike pedaling. Optional: Gru-Bee Model #2 HD rear axle kit: Optional: Selectall Chromed engine or Black PC coated engine: Chrome gas tanks: Optional: Poo Poo Pipes and expansion chamber exhaust. Optional: Dual brake cable lever throttle: Dual lever clutch/brake: Ball bearingidler .Optional: Choose your packing method and what kind of Kit box you want. Use our electronic and automatic order PLPO order form to custom build your engine kits.We sell to approvedwholesale accounts only: Sorry; Not everyone gets approved. To get approved we must have your WD application on file. For pricing information & terms send your complete company profile and marketing plan. For fast replysend your 5W company profile and marketingplan in your first inquiry. Thanks for reading all of this add. Happy trails to you!