KEIHIN / YUMINASHI TYPE-1 THUMB SCREW IDLE ADJUSTER WITH SPRING (MSX/GROM)

● KEIHIN / YUMINASHI TYPE-1 THUMB SCREW IDLE ADJUSTER WITH SPRING
   (MSX/SF ● GROM/SF ● MONKEY125 ● KAWASAKI Z125)

● This thumb screw idle adjuster has been engineered by Keihin Japan with the correct spring thickness and stiffness to ensure the correct spring tension to hold the idle adjuster screw in place with engine vibrations in mind.

With the thumb screw you can now adjust and control your idle on the go without the use of any tools.

This thumb screw idle adjuster is highly recommend for stunt riders and anyone who want to dial in their big bore engines.

To install you need to remove the plastics, and simply remove the stock screw and nut with a 7mm wrench from your throttle body to replace it with the new Keihin/Yuminashi thumb screw and spring set.

■ Please notice that this TYPE-1 thumb screw can't be installed on the 31mm and 34/35mm throttle bodies. These larger throttle bodies need to install the TYPE-2 thumb screw with spring set with you can visit over here.  

■ This thumb screw idle adjuster with spring set can be installed on the Kawasaki Z125 and Z125 PRO. 

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