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Suspension and Components› Shocks, Struts, Coil-Overs and Components

Stillen

Pillow Ball Spherical Rear Upper Shock Mount

$177.88 $170.00 Save $7.88

SKU: PRN21-31S70

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

Moderate — 2–4 hours

Overview

The TEIN PRN21-31S70 is a rear upper shock/strut mount designed for the 1989-1994 Nissan 240SX. It features a Pillow Ball Spherical product line and is sold as a pair.

This mount utilizes NWB spherical bearings and is constructed from Ultra Duraluminum A2017S-4 with a gold anodized finish. The spring I.D. is 70.
Show original supplier description
The TEIN PRN21-31S70 is a rear upper shock and strut mount specifically designed for the 1989-1994 Nissan 240SX models that are compatible with the BASIC, SS, HA, and HE suspension systems. Constructed from Ultra Duraluminum A2017S-4, this mount features a gold anodized finish and incorporates NWB spherical bearings. The "Pillow Ball Spherical" product line indicates enhanced articulation and responsiveness. The mount is designed to accommodate a spring I.D. of 70 and is sold as a pair. This component is crucial for optimizing suspension performance by providing a direct connection between the shock absorber and the chassis, allowing for more precise suspension geometry control. It is designed as an upgrade or replacement for the stock upper mount.

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

BrandStillen
Part NumberPRN21-31S70
CategorySuspension and Components
5,000+ Trusted brands
1M+ Enthusiasts
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(760) 282-4645 hello@motormia.co

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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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