Ensure an airtight intake system with this Premium Carburettor Mounting Rubber. Specifically designed for the Cast Iron (CI) “Old Model” Bullets, this rubber sleeve (also known as a manifold boot or bellow) provides the critical seal between the carburettor and the engine intake. A worn or cracked rubber leads to “lean running,” erratic idling, and engine overheating—making this a vital part for vintage bike maintenance.
Key Features:
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Vintage Fitment: Engineered for early Mikcarb (Mikuni) and Amal carburettor setups found on Bullet 350 and 500 models (Pre-UCE).
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Fuel-Resistant Material: Manufactured from high-density, oil-resistant nitrile rubber that resists degradation from petrol vapours and engine heat.
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Airtight Seal: Precision-molded to provide a snug “push-fit” over the carburettor venturi and the intake manifold, preventing vacuum leaks.
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Vibration Dampening: The flexible rubber construction absorbs engine vibrations, preventing the carburettor from frothing the fuel in the float bowl.
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Flexible Installation: Easily secured with standard hose clamps (jubilee clips) for a reliable, tool-tight seal.
Specifications:
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Compatibility: Royal Enfield Standard 350, Bullet 500 CI, Machismo, and early Electra models.
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Material: Heavy-duty reinforced rubber.
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Inside Diameter: OEM Standard for Mikcarb VM24/VM28.










Y. Abhinav –
Its good