RFX Pro Series Armalite Double Compound (Steel/Aluminium) - 520 SprocketRef : RFX00285A / 1123218001

The RFX Pro Series Armalite 520 Composite Sprocket (48 teeth) is designed for motocross and enduro riders seeking a balance between lightweight and durability. Its machined 7075-T6 aluminum center combined with a high carbon HCS steel outer ring minimizes unsprung weight while maintaining tooth strength against wear on muddy or rocky trails.

• Type: 520 Dual Composite Sprocket
• Number of teeth: 48
• Material: CNC 7075 aluminum inner ring, HCS steel outer ring
• Color: Anodized red
• Technology: Hex-Drive interface between the center and outer ring for direct transmission and reduced stress on rivets
• Profile: CAD design and mud release grooves to limit accumulation and wear

Relatively simple installation: clean the hub, position the new sprocket, apply a thread-locking compound (Loctite blue), and adhere to the torque specifications recommended by the manufacturer. Designed for 520 pitch transmissions, it fits many modern CRF 450 models (e.g., CRF 450 R / RWE / RX).

Manufacturer reference: FXRS 10-48 ALRD — Brand RFX. Suitable for demanding riders who want to reduce unsprung mass without sacrificing tooth longevity.