1. Dirt Bike
    2. Parts
    3. Cooling System

    2004 Yamaha WR250F Cooling System

    2004 Yamaha WR250F
    Tire Size:
    Front: 80/100-21, Rear: 100/100-18
    Spark Plug:
    CR8E
    Battery:
    YTX5L-BS
    Stock Chain/Belt:
    520x114
    Stock Gearing:
    Front: 13T, Rear: 52T
    Oil Filter:
    KN-140
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    Myler's Super Cool Radiator Myler's Super Cool Radiators are Considerably improved from stock radiators, Offering superior cooling and added strength. Features: SuperCool radiators offer superior c
    Mishimoto Temperature Gauge Radiator Cap The Mishimoto Temperature Gauge cap will provide increased pressure tolerance (1.3 Bar), while providing an accurate temperature reading of your coolant. Rate
    Hot Rods
    Water Pump Rebuild Kit
    $19.95
    $18.99
    You save $0.96 (5%)
    (1)
    Hot Rods Water Pump Rebuild KitKit includes water pump cover gasket or o-ring, water pump shaft bearing(s) and seal(s) to repair a leaking water pump seam and/or a failed bearing Precision micro beari
    Myler's High Pressure Radiator Caps High pressure radiator caps will help with recurring boil over problems  Raises the boiling point 25+ degrees  Comes with an attachment chain that connects to your
    Myler's Silicone Hose Kit Myler's Silicone Hose Kits are tougher than your stock hoses and all other Silicone hose kits out there  They are 5 m.m. thick with 4 polyester reinforcement linings  They w
    Fluidyne
    Power-Flo Radiator
    $265.10
    $238.99
    You save $26.11 (10%)
    (4)
    Fluidyne Power-Flo Radiator Power-Flo Radiators ensure modified motors maintain peak horsepower by increasing the efficiency of the cooling system Radiators cores are thicker then stock, providing in
    Boyesen
    Water Pump Impeller
    $78.95
    $71.99
    You save $6.96 (9%)
    (0)
    Boyesen Water Pump ImpellerDesigned by Boyesen Engineering to increase water flow and reduce hydraulic friction for a cooler, more constant temperature Less horsepower loss during the late stages of

    Latest Reviews

    Jeff (BC, BC)

    Fit
    Finish
    Durability
    Features
    Cost Benefit

    Supercooler

    Purchased for 2007 yz450f, very nice part, impeller is quite a bit different than stock, so is the housing. Will definitely move more coolant. Installed super easy, you have to re use the rubber o-ring type gasket from the stock water pump so be careful removing the old one. I haven't yet ridden the bike on a hot day since so I can't say how much cooler it will run. Nice looking and looks to be a very functional upgrade.

    Marcus F (Campbell River, BC)

    Fit
    Quality
    Installation
    Recommend

    Perfect

    Once again Motorcycle Superstore pulled through north of the border. They had my parts to me in less than a week. My old hose melted and I put on these sharp looking and better made hoses by factory effex. Awesome product. Easy to install and looks great. You can tell it is just better quality than stock.

    Ted (Castle Rock, CO)

    Fit
    Quality
    Installation
    Recommend

    Factory Effex Y Engine Hose Kit

    I trail ride a 2009 Honda CRF450R in the mountains of Colorado. Prior to installing the FX hose kit, slow technical trail riding would result in over-heating into my make shift radiator over flow reservoir. I tried Engine Ice Antifreeze and a 1.6 radiator cap but would still over heat when riding slow. With the new hoses installed, I've replaced the 1.6 cap back to the stock 1.1 radiator cap. No over heating after two outings. I am very pleased with the functionality, as well as appearance.

    Dan CRF 450R (St. Louis, MO)

    Fit
    Finish
    Durability
    Features
    Cost Benefit

    Fixed it quickly and correctly

    I noticed coolant leaking from the weep hole on my CRF 450R and ordered this water pump repair kit. I split clutch case, pulled the pump, replaced the bushings and had it back together in under an hour... Very quick and easy to do! Worked like a charm! You do need a press or vice to remove the pump bearings if you are going to replace all bushings. The bushing behind the bearings was fine on mine, so I didn't have to mess with it. Great product and you cannot beat the price!

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