Renthal 154U-520-51GRHA Rear Sprocket for Honda CR and CRF Models, 520 Chain, 51-Tooth

Renthal 84-24 Honda CR 125R-500R/CRF 450L/250R/450RL/RX/X Rear Sprocket LTD - H Anod 520-51 Teeth

The Renthal 154U-520-51GRHA Rear Sprocket is designed for select Honda CR and CRF motorcycles using a 520 chain. This 51-tooth sprocket combines precise manufacturing with a hard-anodized finish to provide dependable drivetrain performance for motocross, off-road, and dual-sport applications. Its fitment range includes Honda CR125R through CR500R models from 1984–2004, along with select CRF models through 2024.

Renthal manufactures this sprocket with a focus on accurate tooth geometry, consistent chain engagement, and reduced rotating mass. The lightweight construction helps support responsive acceleration and suspension performance, while the hard-anodized surface helps resist wear and corrosion during demanding riding conditions. The 51-tooth configuration can be used to adjust final-drive gearing, offering increased low-speed response and improved control in technical terrain when paired with compatible front sprocket and chain selections.

Feature: Lightweight construction Helps reduce unsprung and rotating mass for responsive handling and acceleration.
Feature: Hard-anodized finish Provides added surface protection against wear and corrosion.
Feature: 51-tooth gearing Supports final-drive tuning for stronger low-speed performance and technical riding control.
Feature: Precise tooth profile Promotes smooth, consistent chain engagement and reliable power transfer.

Specifications:
Brand: Renthal
Part Number: 154U-520-51GRHA
Product Type: Rear sprocket
Chain Size: 520
Tooth Count: 51
Finish: Hard anodized
Material: Lightweight aluminum construction
Application: Powersports motorcycle drivetrain

What's Included: One Renthal 154U-520-51GRHA rear sprocket. Chain, front sprocket, mounting hardware, and installation instructions are not included unless specified by the seller.

Fitment: Designed for select 1984–2024 Honda CR125R, CR250R, CR500R, CRF250R, CRF450L, CRF450RL, CRF450RX, and CRF450X models. Verify the exact year, model, chain size, sprocket carrier, and original-equipment gearing before installation.

Features:

• Lightweight construction helps reduce rotating mass for responsive acceleration and handling.
• Hard-anodized finish helps resist surface wear and corrosion.
• 51-tooth configuration supports final-drive gearing changes for improved low-speed response.
• Precisely formed tooth profile promotes smooth chain engagement and dependable power transfer.

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1