RFX Pro Series Elite Aluminum Sprocket - 428 (Manufacturer Ref: FXRS 51-45 99BU)
Designed for motocross riders who demand precise and lightweight equipment, this RFX Pro Series Elite sprocket is CNC machined from 7075 aluminum and anodized in blue. Its CAD profile optimizes material to reduce weight without sacrificing stiffness, while mud evacuation grooves limit dirt accumulation between the links and the sprocket range — a real advantage in wet and muddy conditions.
- Material: CNC machined 7075 aluminum
- Number of teeth: 45 (pitch 428)
- Color: anodized blue
- Laser-etched RFX logo
- CAD profile for optimized stiffness-to-weight ratio
- Mud evacuation grooves for better performance in muddy conditions
- Close tolerances for consistent chain engagement
This sprocket is designed for the motocross environment and is suitable for drivetrains equipped with a 428 pitch chain. Compatible model examples include: KTM 85 SX STD WHEELS 17/14 (2025), HUSQVARNA TC 85 STD WHEELS 17/14 (2025), and GAS GAS MC 85 19/16 (2025). Ideal for replacing a worn part during workshop maintenance or for preparing a competition bike without compromising on finish and machining precision.
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