REAR SPROCKET 39 [1857.39] 520, BLACK
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with
Rear steel sprocket with 39 teeth for 520 chain systems. Constructed from C45 high carbon steel, this sprocket is heat-treated, hand-finished, and sandblasted to reduce surface tension. Features a black powder-coated finish for enhanced surface integrity. Meets or exceeds motorcycle industry standards. Part Number: SR603-39.STEEL.
- SKU
- SR603-39.STEEL
- Brand
- Dirt Racing
- Availability
- In Stock (10)
- General Colour C
- Black
- General Product Group
- Chain & Sprockets
- General Product Type
- Sprockets & Components (Rear)
- Variant Id
- 278666
FULL DESCRIPTION
Dirt Racing 39 Tooth Rear Sprocket for 520 Chain - Black
This high-quality rear steel sprocket from Dirt Racing features 39 teeth and is designed for use with 520 chain systems. Manufactured from robust C45 high carbon steel, it provides a durable and reliable solution for your motorcycle or ATV. The sprocket undergoes a rigorous heat-treatment process and is hand-finished to ensure consistent performance. A sandblasting treatment is applied to reduce surface tension, enhancing its longevity. The sprocket is finished with a durable black powder coating for improved surface integrity and a sleek appearance. This product is engineered to meet or exceed strict motorcycle industry standards for compound modification.
Key Features:
- Constructed from C45 high carbon steel for superior strength and durability.
- Heat-treated and hand-finished for optimized and consistent performance.
- Sandblasted surface treatment to minimize surface tension.
- Features a protective black powder-coated finish.
- Designed and manufactured to meet or exceed industry standards.
Specifications:
- Tooth Count: 39
- Chain Size Compatibility: 520
- Material: C45 high carbon steel
- Finish: Black powder coat
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
Call or email us with your make, model and year and we will check it for you before you order.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.


