Carb rubber PHBH/PHBL conversion.

MB designed Viton carb mounting rubber.

Simple way to swap carbs if you want to go smaller from say a 28/30mm Dellorto down to a 25/22mm Dellorto.

Or you can go up from a 22/25mm Dellorto to a 28/30mm.

No need to remove and replace the inlet manifold.

• Large end diameter of spigot is 36mm, one groove
• Small end diameter of spigot is 30mm, one groove
• The rubber measures 32mm in length.

TIPS: 

1. Make sure both inlet manifold and carb are clean and dry before fitting
2. Always use the wide type Jubilee clips
3. Do not over tighten the clips
4. Always carry a spare