Enlarged opening in carb, also the intake angle has been reshaped for better flow. These modifications will provide the best performance possible for racing or all out speed for your engine.This is the carb of choice for RC. Walbro WT-257 butterfly carburetor.

This is the carb of choice for RC. Walbro WT-257 butterfly carburetor. 2 jets (independent high and low), 15.88mm bore, 12.7mm venturi. Internally metered for higher fuel flow than the WT-603 / WT-668 / WT-643/4. For scooters: Fits Zenoah G230RC / G260RC / G231PUH / G260PUH / G260PU / G231PUM / G260PUM engines. Also fits Zenoah G23LH / G2D / G43L / GZ25N14 / GZ23N23 engine if appropriate manifold is installed. Also fits Chung Yang CY23RC / CY26RC / CY27RC / CY29RC / GP290 engines. For R/C: This carburetor is an EXCELLENT upgrade for many RC airplane, helicopter, car/buggy, and marine applications. Works well on most Zenoah engines and clones. Substantially outperforms the stock WT-644 carburetor on Zenoah G231PUM / G260PUM engines

Walbro WT-644 high-performance butterfly carburetor with integrated choke. 2 jets (independent high and low), 15.88mm bore, 12.7mm venturi. For R/C: This carburetor is the stock carburetor on the Zenoah G231PUM / G260PUM engines. For scooters: Fits Zenoah G230RC / G260RC / G231PUH / G260PUH / G260PU / G231PUM / G260PUM engines. Also fits Chung Yang CY23RC / CY26RC / CY27RC / CY29RC / GP290 engines. For pocketbikes: Fits 47cc and 49cc pocketbikes when used with appropriate manifold. For R/C: This carburetor is the stock carburetor on the Zenoah G231PUM / G260PUM engines.

Walbro WT-771 high-performance carburetor. 2 jets (independent high and low), 15.88mm bore, 12.7mm venturi. This is the stock carburetor used in the CY "Sikk" Watercooled engine and is also a popular carburetor for use on Zenoah watercooled engines. For scooters: Fits Zenoah G230RC / G260RC / G231PUH / G260PUH / G260PU / G231PUM / G260PUM engines. Also fits Chung Yang CY23RC / CY26RC / CY27RC / CY29RC / GP290 engines. For pocketbikes: Fits 47cc and 49cc pocketbikes when used with appropriate manifold. See part ww232 and ww233 for details. For R/C: This carburetor is the stock carburetor on the CY "Sikk" watercooled engines, and is commonly used as a performance carburetor on Zenoah and other brand engines.

Walbro WT-603 high-performance butterfly-style carburetor with integrated choke. 2 jets (independent high and low), 15.88mm bore, 12.7mm venturi. Comes with a choke lever. (AV498 603 carb for Goped use has enlarged 4th hole in swivel for Goped throttle cable attachment. For R/C: This carburetor is an EXCELLENT upgrade for many RC airplane, helicopter, car/buggy, and marine applications. Works well on most Zenoah engines and clones. Zenoah part # T2070-81001. FG part # 07355/8. Interchangeable with HPI part # 15460.

This is the carburetor recommended by Zenoah for upgrading your engine. Engines with the standard carburetor (WT-603, WT-668, etc) tend to experience a lag in low-end acceleration when tuned for peak power. The new carburetor includes an internal acceleration pump to allow faster recovery as throttle increases. Carburetor specs: Walbro WT-813. 15.88mm bore, 12.7mm venturi, independent tunable high and low speed jets.

Walbro WT-929 high-performance butterfly-style carburetor. This carburetor comes stock on the RCMK engines. For R/C: This carburetor is an EXCELLENT upgrade for many RC airplane, helicopter, car/buggy, and marine applications. Works well on most Zenoah engines and clones. Zenoah part # T2070-81001. FG part # 07355/8. Interchangeable with HPI part # 15460.

Walbro WYK-33 high-performance barrel carburetor. 15mm bore, 13.5mm venturi. Adjustable high-end jet. For scooters - fits G43L engine (on GSR40 and Go-Bike) when used with the ADA billet GSR40 intake manifold. Fits G43L engine on GSR40-TS using the stock manifold. For pocketbikes - fits 49cc pocketbikes with piston port motors. Also fits case reed inducted '47cc' bikes if ADA WYK billet intake manifold is installed.