Yokomo Z2-30RUMWA Aluminium Wide Rear Upper Arm Mount for YZ-2 DTM3/CAL3  [Z2-30RUMWA]

Yokomo Z2-30RUMWA Aluminum rear upper arm mount (Wide) for YZ-2 DTM3/CAL3
Price:
CAD$28.46
Brand:
Yokomo
Model:
Z2-30RUMWA
GTIN:
0639342216581
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Spares / Hop-ups - Yokomo - Off-Road Chassis Parts category
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Stiffer Rear Upper Arm for Improved Stability

The Yokomo Z2-30RUMWA is an aluminium rear upper arm mount made for the YZ-2 DTM3 and CAL3 chassis. The wide specification matches broader lower mounts to help stabilise the rear end during fast cornering and quick direction changes.

Built for Precision and Track Use

Machined from durable aluminium, this rear upper arm mount balances strength with a low weight. The wider stance helps keep suspension geometry more consistent under load, making it a straightforward performance upgrade for experienced racers and club drivers alike.

Fitment and Practical Application

This mount is compatible with a range of chassis codes, including B-YZ2DTM31-1 and B-YZ2CAL31-1, plus associated SOR and ROR models. Installation is direct and requires standard tools, so it suits both seasoned builders and hobbyists stepping up their setup.

Suitable Models

  • B-YZ2DTM31-1
  • B-YZ2CAL31-1
  • SOR-010
  • ROR-010
  • ROR-010RTR
  • ROR-010RTR-1
  • SOR-020
  • SOR-020D
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

Will the Z2-30RUMWA fit other Yokomo chassis?

The Z2-30RUMWA is designed for YZ-2 DTM3 and CAL3 platforms and the listed SOR/ROR variants. It may fit other frames with similar mounting points but check dimensions before modifying any chassis.

How does an aluminium mount change handling?

Aluminium adds rigidity compared to plastic parts, reducing flex in the rear end. The wider mount shifts suspension geometry toward a more planted feel, especially on high speed sections.

Do I need special screws or bearings?

Standard mounting hardware that fits the original upper arm mount will usually work. Inspect screw lengths and threads during installation and swap to thread locker where appropriate.

What maintenance should I do after installation?

Periodically check mounting fasteners for tightness and look for any play at suspension pivots. Lightly lubricate pivot points and replace worn hardware to keep handling consistent.

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