Engines and Components› Harmonic Balancers

Moroso

Moroso Drive Mandrel Spacer Kit w/Hardware - 2.275in Register - Billet Aluminum

$92.99

SKU: M00R 63890

In Stock
In Stock
Ships by Jun 17
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Moroso 63890 is a drive mandrel spacer kit designed for custom drive setups and oversized hardware. It features a 2.275" female register and a 3.200" bolt circle. The spacer is constructed from billet aluminum and includes hardware.

This kit is intended for use with Moroso and other bolt-on flange style mandrels. The spacer includes both threaded and non-threaded bolt patterns. The threaded pattern allows the spacer to be bolted directly to a BBC Style Balancer, while the non-threaded pattern enables the mandrel to be bolted through the spacer into the harmonic balancer.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMoroso
Part NumberM00R 63890

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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