Fitment

• 2013-2017 Kawasaki EX300 Ninja 300 R

GFRA "GoFast" 520 Conversion Street kit with hardcoat aluminum rear sprocket. Gearing one down in front, stock rear. SX3 Vortex Chain.

Vortex Steel Front Sprocket

• Drilled lightening holes reduce rotating mass
• High carbon steel for maximum strength
• Special Vortex Nichel plating to resist corrosion
• Induction hardened to reduce surface wear
• Precise tolerances to ensure concentricity

Vortex F5 Rear Sprocket

The F5 PTFE Black Hardcoat is built for endurance. After hard anodizing with a jet black dye, Vortex then coats the sprocket with PTFE for added lubricity. The result is an ultra tough, ultra light sprocket that stays cleaner and lasts longer. A Vortex sprocket is a lightweight high-performance alternative to the steel stock sprocket. Use Vortex sprockets to considerably reduce mass and to change your gearing. Made with highest quality aluminum.

• 7075 T6 aluminum is the best grade material for light weight and durability.
• The weight you save on drive components is multiplied as rotating mass.
• Less rotating weight improves acceleration.

Vortex SX3 Chain

• Drilled links reduce rotating mass
• X-ring seals to reduce friction
• Improved tensile strength
• Includes rivet type connecting link

Specs

• Series: GFRA
• Ratio: 3.07
• Front Sprocket Teeth: 14
• Rear Sprocket Teeth: 43
• Front Sprocket Type: Steel
• Rear Sprocket Type: Aluminum
• Chain Size: 520
• Chain Links: 106
• Chain Color: Black
• Chain Strength: 8500

Brand: Vortex Racing
Part Number: CK4257