The Bis-racing exclusive Race Ported Walbro WT-603 racing carburetor. They are sick on any engine application that the walbro carbs are adaptable. The walbro WT-603 carburetor (16.5mm entry, 15mm exit) Features a 12.7mm venturi and is ported by the the technicians here at BIS. Inner bore has been resurfaced and the bore enlarged to provide a higher rate of intake and more heavy fuel burn. Thusly providing more power! The process, PORTING is never done by the carburetor manufacturers because they can not afford the skilled labor it takes to perfect and deburr the entryway. The restrictive choke has been removed, holes filled, and choke rests removed to allow massive airflow.
- 5mm Bolt hole pattern. Comes with carb prep kit (swivel, throttle arm, and barrel nut)
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 Walbro WT/WA manifold adapter plate in the REEDS & MANIFOLD SECTION.
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
