banshee power upgrade Archives -

CR250.2002.2004 325.CYL.KIT.CEO

$700.00

Product Overview
Manufacturer	Eddie Sanders Racing (ESR)
Application	Yamaha Banshee (CR250 Conversion)
Model Years	2002 – 2004
Displacement	325cc
Technical Specifications
Cylinder Material	CNC-machined aluminum alloy
Bore Type	Oversized CR250-based bore
Bore Coating	Nikasil (Nickel-Silicon Carbide)
Piston Type	Forged aluminum oversized piston
Cooling	Optimized for liquid-cooled systems
Port Design	High-flow race-inspired port timing
Fuel Type	Premix
Intended Use	Performance, racing, high-output builds

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Product Overview
Eddie Sanders Racing CR250 Cylinder Kit for Yamaha Banshee 350 (2005-2007)
Technical Specifications
Compatibility	Yamaha Banshee 350 (CR250) 2005-2007 models
Displacement	325cc (oversized bore)
Cylinder Material	CNC-machined aluminum alloy
Cylinder Bore Coating	Nikasil (nickel-silicon-carbide) for enhanced durability and heat dissipation
Piston	High-grade forged aluminum alloy, oversized to match bore
Porting	Custom port timing optimized for increased torque and horsepower
Weight	Approx. 3.5 lbs (1.6 kg)
Finish	Anodized for corrosion resistance
Installation	Direct bolt-on replacement, requires standard tuning adjustments
Exhaust Compatibility	Fits stock and aftermarket Banshee exhaust systems
Brand	Eddie Sanders Racing – renowned for ATV performance upgrades

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Product Overview
Technical Specifications
Product Type	Cylinder Conversion Kit
Manufacturer	CEO (CR Conversion Engineering)
Application	Yamaha Banshee
Donor Platform	Honda CR250
CR Model Years	2005–2007
Displacement	325cc per cylinder
Engine Type	2-Stroke, Twin Cylinder
Material	CNC-machined aluminum alloy
Bore Design	Oversized CR250-based bore
Cooling	Liquid-cooled, modified passages
Porting	High-flow race port architecture
Compatibility	Performance cranks, big carbs, aftermarket pipes
Intended Use	Dunes, drag racing, hill climb, high-performance builds

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Genuine Keihin PWK Carburetors 33MM, 35mm or 39mm, sold as pair.

Product Overview
Product Type	Carburetor Set (Pair)
Brand	Keihin (Genuine OEM)
Model	PWK Series
Application	Yamaha Banshee 350
Technical Specifications
Engine Type	2-Stroke, Twin-Cylinder
Slide Type	Flat Slide
Quantity	2 Carburetors
Fuel Type	Gasoline
Jetting	Fully Replaceable / Tunable
Intake Mount	Spigot / Rubber Boot
Use	Performance, Racing, Trail, Dunes
Compatibility	Most stock and modified Banshee engines

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$675.00

Banshee (’87-’06)(+4mm stroke) with +5mm longer rods; Produces up to 403ccFactory welded, trued, and balancedImportant: Requires Vertex Long Rod pi…

Product Overview
High-performance stroker crankshaft engineered for the Yamaha Banshee 350, designed to increase stroke by 4mm over OEM specifications. Built using aerospace-grade forged steel and CNC-machined for extreme durability, precision fitment, and smooth high-RPM operation in both stock and aftermarket engines.
Technical Specifications
Stroke Increase	+4 mm over OEM
Material	Aerospace-grade forged steel alloy
Manufacturing	CNC-machined, precision heat-treated
Weight	Approx. 4.5 lbs (varies slightly by batch)
Balance	Dynamic balancing for smooth operation
Compatibility	Yamaha Banshee 350 (1987–2006), stock and aftermarket engines
Spline Count	OEM specification for perfect clutch fitment
Tolerance	±0.01 mm for exact fit
Warranty	Limited manufacturer warranty on defects
Packaging	Includes new crankshaft bearings and seals

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$69.00

Universal temperature gauge fits all makes and models! Available in red, blue, black, and bare aluminum. Must have for modified engines.

Product Overview
Yamaha Banshee Water Temperature Gauge
Technical Specification	Details
Compatibility	Yamaha Banshee 350 (1987–2006)
Temperature Range	50°F to 280°F (10°C to 140°C)
Accuracy	±2%
Sensor Type	Fast-response thermistor
Housing Material	CNC-machined aerospace-grade aluminum
Finish	Black anodized corrosion-resistant coating
Lens	Shatter-resistant UV-protected glass
Installation	Plug-and-play with OEM hose fittings
Dimensions	2.25 inches dial diameter
Weight	Ultra-light design (approx. 150g)
Waterproof Rating	IP67 dust and water resistant
Included	Mounting bracket, hose adapter, installation hardware

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$1,100.00

Product Overview
Technical Specifications
Product Type	Cylinder Conversion Kit
Manufacturer	CEO (CR Conversion Engineering)
Application	Yamaha Banshee 350 (2005–2007)
Donor Platform	Honda CR250
Displacement	325cc per cylinder (650cc total twin-cylinder)
Engine Type	2-Stroke, Twin Cylinder
Material	CNC-machined aluminum alloy
Bore Diameter	Oversized for increased displacement
Fitment	Direct bolt-on, compatible with stock crankcase and heads
Weight	Lightweight design for improved power-to-weight ratio
Heat Management	Enhanced cooling due to aluminum construction
Installation	Includes cylinders, gaskets, seals, and instructions
Performance Focus	Increased torque, horsepower, and throttle response

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