2Bros Parts

FRONT SPROCKET 12 [JTF421/422.12] 520

$6.78

4.1 Trustpilot 99.9% positive on eBay

Delivery to United States 5–8 business days

Spread the cost with Klarna

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FRONT DRIVE SPROCKET 12 TEETH 520. Carbon Steel S45C. Hardness HRC 50-55 After heat treating. Each sprocket is sandblasted to reduce surface tension. Meet or exceed the highest-quality compound standards set by the motorcycle industry. Part No. SF421-12.DR. Cross reference numbers ONLY. PSYCHIC MX-50212.

Specifications
SKU
SF421-12.DR
Brand
Dirt Racing
Availability
In Stock (12)

Fitments (80)

MakeModelYear
KAWASAKIKDX 1751979
KAWASAKIKDX 1751980
KAWASAKIKDX 1751981
KAWASAKIKDX 1751982
KAWASAKIKDX 1751983
KAWASAKIKDX 1751984
KAWASAKIKDX 1751985
KAWASAKIKX 1251980
KAWASAKIKX 1251981
KAWASAKIKX 1251982
KAWASAKIKX 1251983
KAWASAKIKX 1251984
KAWASAKIKX 1251985
KAWASAKIKX 1251986
KAWASAKIKX 1251987
KAWASAKIKX 1251988
KAWASAKIKX 1251989
KAWASAKIKX 1251990
KAWASAKIKX 1251991
KAWASAKIKX 1251992
KAWASAKIKX 1251993
SUZUKITS 1851973
SUZUKITS 1851974
SUZUKITS 1851975
SUZUKITS 1851976
SUZUKITS 1851977
SUZUKITS 1851978
SUZUKITS 1851979
SUZUKITS 1851980
SUZUKITS ERN 1851980
SUZUKITS ERN 1851981
SUZUKITS ERN 1851982
SUZUKITS ERN 1851983
SUZUKITS ERN 1851984
SUZUKITS ERT 1851980
SUZUKITS ERT 1851981
SUZUKITS ERT 1851982
SUZUKITS ERT 1851983
SUZUKITS ERT 1851984
SUZUKITS ERX 1851980
SUZUKITS ERX 1851981
SUZUKITS ERX 1851982
SUZUKITS ERX 1851983
SUZUKITS ERX 1851984
YAMAHAIT 1251980
YAMAHAIT 1251981
YAMAHAIT 1251982
YAMAHAIT 1751980
YAMAHAIT 1751981
YAMAHAIT 1751982
YAMAHAIT 2001985
YAMAHAYZ 1001977
YAMAHAYZ 1001978
YAMAHAYZ 1001979
YAMAHAYZ 1001980
YAMAHAYZ 1001981
YAMAHAYZ 1001982
YAMAHAYZ 1001983
YAMAHAYZ 1251977
YAMAHAYZ 1251978
YAMAHAYZ 1251979
YAMAHAYZ 1251980
YAMAHAYZ 1251981
YAMAHAYZ 1251982
YAMAHAYZ 1251983
YAMAHAYZ 1251984
YAMAHAYZ 1251985
YAMAHAYZ 1251986
YAMAHAYZ 1251987
YAMAHAYZ 1251988
YAMAHAYZ 1251989
YAMAHAYZ 1251990
YAMAHAYZ 1251991
YAMAHAYZ 1251992
YAMAHAYZ 1251993
YAMAHAYZ 1251994
YAMAHAYZ 1251995
YAMAHAYZ 1251996
YAMAHAYZ 1251997
YAMAHAYZ 1251998
General Product Group
Chain & Sprockets
General Product Type
Sprockets & Components (Front)
Variant Id
276432
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Front Drive Sprocket 12 Teeth 520 Chain

This front drive sprocket is designed for 520 pitch chains and features 12 teeth. Constructed from S45C carbon steel, it undergoes heat treatment to achieve a hardness of HRC 50-55. Each sprocket is sandblasted to reduce surface tension, ensuring optimal performance and longevity. Manufactured to meet or exceed the highest quality compound standards set by the motorcycle industry, this sprocket is a high-quality replacement part.

Key Features:

  • 12-tooth front drive sprocket
  • Compatible with 520 pitch chains
  • Made from S45C carbon steel
  • Hardness: HRC 50-55 after heat treatment
  • Sandblasted finish to reduce surface tension
  • Meets or exceeds industry quality standards
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).

Call us+44 330 133 3748
Email us[email protected]

Check the fitment table on this page against your make, model and year. Not sure? Call or email us 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.

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