Alter Ego Motorcycle Supply — Serving Riders Since 1973

Kansas City, MO & Shawnee, KS · Since 1973

PARTS. PERFORMANCE.
PASSION.

Find the parts and gear for your next ride.

U.S. shipping  ·  Free Kansas City pickup when ready

SELECT YOUR RIDEFind parts for your motorcycle

Garage 0

Your garage

Save up to 10 motorcycles in this browser. Bikes are not synced to your account or other devices.

    Choose year, make and model. Matching parts open automatically when you choose a model.

    Enable JavaScript to choose your motorcycle and use the garage.

    JT Rear Sprocket Steel 42T-520 Yam — JTR1857.42

    JT Rear Sprocket Steel 42T-520 Yam — JTR1857.42

    $27.95

    Check vehicle fitment →

    Sign in to save for later

    JT rear sprocket steel 42t-520 yam.

    In stock

    SKU: WP55-185742
    Category:
    Brands:

    Description

    JT rear sprocket steel 42t-520 yam. Manufacturer part number JTR1857.42.

    WPS part number 55-185742.

    Vehicle fitment

    WPS lists this part for the following vehicles. Match your exact model and year.

    Follow the position, mounting and installation notes in the product description. Modified vehicles may require different parts.

    Compatible vehicle years, makes and models
    YearsMakeModel
    2006–2015YamahaYFM700R Raptor
    2007–2015YamahaYFM700RSE Raptor SE
    2007YamahaYFM700RY Raptor GYTR Edition
    2009–2015YamahaYFZ450R
    2009–2015YamahaYFZ450R SE

    Source: WPS vehicle-fitment data · WPS part 55-185742 · Checked November 11, 2026.

    Additional information

    Weight 1.7 lbs
    Dimensions 9.75 × 8.95 × 0.65 in

    Reviews

    There are no reviews yet.

    Be the first to review “JT Rear Sprocket Steel 42T-520 Yam — JTR1857.42”

    Your email address will not be published. Required fields are marked *

    Complete the job

    Useful tools and supplies to go with this purchase. Check what you already have and what is included.