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DEEP CARB PLUG / DEEP SUMP PLUG FOR ALL 450/250F 99-08 : Black

Product code: AA1352
£24.95
  • Out of stock
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DEEP CARB PLUG/DEEP SUMP PLUG IN BLACK

3100-001

Fits: 99-08 CRF 450/250, YZF 450/250, KX 450/250F, SUZ 450/250F
Deep Sump was a direct result of trying various shapes and volumes of fuel around the main jet. It was also noticed that increasing the volume and surface area exposed to the outside environment caused a small decrease in fuel temperature, which again helps combustion. The M.D. of Petersen Engineering, Bob Petersen, a keen off-road motorcycle enthusiast, thought it would be an idea to try this on his motor cycles. The result was Deep Sump. Immediately an improvement was felt in response to the throttle.
It was then realised that a second and possibly more important result, when the Deep Sump was removed after testing - a significant quantity of dirt and water - laying in the bottom of the chamber.
The environment that is off-road motorcycling means a very good chance of contamination of the fuel, either from containers used, supply or more likely when filling the fuel tank in the rain, dust and dirt that is part of off-road sport.
A small filter was then added to the Deep Sump which is made of special material and this trapped the dirt and water, stopping it from being moved around in the chamber. Thus Deep Sump was born.
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