Wheel kits

AR1 Wheel Kit XR/CRM

Part number
D4780
OEM Part number
W21-51561

Type

Rear 18×2.15"

Collar (Hub/Rim/Nipple)

Red/Black/Red

View other product series

Inquire about our products

Rear 18×2.15

Front 21×1.60

Product Description

A complete wheel kit built with the same high-spec components as the AR1 competition wheels.
By combining Z-WHEEL’s R50 rim, precision-machined Asterlite hub, aluminum nipples, and reinforced spoke set, this kit delivers superior strength compared to OEM wheels.

[ R50 Rim ]
Racing-spec rim developed for MX and Enduro competition use.
Manufactured from A7050-T6 aluminum alloy, with a cross-sectional design engineered for optimal strength-to-weight balance.
Carefully designed to meet the dual demands of rigidity and lightweight performance.

[ Precision-Machined Asterlite Hub ]
Carved from a solid block of high-strength aluminum alloy and reduced to one-tenth of its original weight through advanced machining.
The precision-machined design offers exceptional strength and lightness while maintaining a premium finish.
Side cutouts further improve mud-shedding performance.

[ Aluminum Nipples & Reinforced Spokes ]
Equipped with Z-WHEEL high-strength aluminum nipples, offering a weight advantage over OEM steel.
Matched with Z-WHEEL stainless steel spokes, increased in thickness for greater durability.
The rear wheel is upgraded from 32 to 36 spokes, ensuring efficient power transfer to the ground.

[ Rim Performance Equal to Modern Motocross ]
Older models such as the CRM250R (factory-fitted with hollow rims) gain a significant performance upgrade with U-profile R50 rims,
achieving strength and rigidity on par with today’s motocross machines.

[ Hub Design Refined from Motocross Feedback ]
OEM XR-series wheels use a spoke pattern that differs from motocross models, resulting in lower lateral rigidity.
The AR1 Wheel Kit incorporates motocross hub design principles to improve rigidity while also achieving a combined weight reduction of approx. 700g compared to OEM hubs.


  • Kit Contents

    • Rim

    • Hub

    • Spoke Set

    • Nipple Set



  • Weight

    • Front: 2880g

    • Rear: 3750g
Image Part number / OEM Part number {{ item.specification_1_content_en }} {{ item.specification_2_content_en }} {{ item.specification_3_content_en }}
Loading data...
{{ series_item.specification_1_attribute_name_en }} {{ series_item.specification_2_attribute_name_en }} {{ series_item.specification_3_attribute_name_en }}
No data

Precautions

  • All parts are designed exclusively for the complete kit and are not factory-compatible.
  • When installed on XR250(MD30), CRM250R/AR, XR400R, the speedometer will not measure correctly.
  • When using for CRM250R '89-96, "Driven sprocket, sprocket bolt, washer and nut" must be changed to those for CRM250AR.

TOP