Chassis Components› Bushings and Mounts

Excessive Manufacturing

IS300 Urethane Motor Mount

$220.67

SKU: T-JCE10-UMM-S12a-O

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Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Xcessive Manufacturing IS300 Urethane Motor Mount is a performance urethane mount designed as a direct fit replacement for the Lexus '99-'05 IS300. The mount features CNC-cut steel bases with powder coating and pressure-cast aluminum upper units with a pressed-in stud for a factory-like fit. It comes standard with stiffer 80A Orange Urethane bushings, with softer 65A Yellow bushings available by request.
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The Xcessive Manufacturing IS300 Urethane Motor Mount offers a robust solution for replacing worn or soft stock rubber mounts. Designed specifically for the Lexus '99-'05 IS300, these performance urethane mounts are built to withstand significantly more power than their factory counterparts. The construction utilizes durable materials, including CNC-cut steel for the mount bases, which are then powder-coated for corrosion resistance. The upper component is a pressure-cast aluminum piece, also powder-coated, featuring a pressed-in stud that ensures a direct fit. The urethane bushings are available in two durometers: a standard, stiffer 80A (Orange) for most applications, and a softer 65A (Yellow) option available upon request. As performance mounts, these are expected to transmit an increase in engine noise to the chassis. It is crucial to note that these mounts **DO NOT fit the IS200 SXE10 Altezza**. The product is designed for the USDM chassis (JCE10), which is sometimes colloquially referred to as the SXE10 (the JDM chassis). Key features include significantly reduced engine movement, full floating omni-directional dampening (unlike "puck" type mounts), easy replacement bushings, and all new components. They are sold as a pair with 80A bushings included.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandExcessive Manufacturing
Part NumberT-JCE10-UMM-S12a-O
CategoryChassis Components
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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