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

YSS Suspension

MZ366 Rear Shock Absorber

Name: MZ366 Rear Shock Absorber
Brand: YSS Suspension
SKU: MZ366-290TRJ-40

$417.05

SKU: MZ366-290TRJ-40

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$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The YSS MZ366 is a rear shock absorber designed for performance and adjustability. It features a bladder reservoir for improved movement and cooling, and is constructed with a sintered piston and a heat-treated, hard chrome, low-friction shaft. The shock is fully serviceable and includes calibrated Teflon-coated DU bushes for durability.

Adjustability options include threaded spring preload, high and low-speed compression damping, and a 60-click rebound adjustment, allowing riders to customize their suspension settings.

Show original supplier description

The YSS MZ366 is a high-performance rear shock absorber engineered for motorcycles, offering a significant upgrade in handling and adjustability. This commitment to quality has earned YSS TUV, KBA, and ISO accreditation, and the entire range comes with a two-year warranty. This specific MZ366 model features a durable construction, including a sintered piston and a heat-treated, hard chrome, low-friction shaft, paired with calibrated Teflon-coated DU bushes for enhanced longevity. Its bladder reservoir design aids in better movement and cooling, crucial for sustained performance. The shock is fully serviceable, ensuring it can be maintained and optimized over its lifespan. The shock absorber offers extensive adjustability to cater to individual riding preferences and conditions. Riders can fine-tune the suspension with threaded spring preload adjustment, high and low-speed compression damping adjustments, and a precise 60-click rebound adjustment system. These features allow for a personalized setup, enabling riders to achieve optimal balance, handling, and comfort. The YSS MZ366 shock is designed to meet OE fitment specifications, ensuring a direct replacement for the stock unit. The product is available in two shock length options: 275-285mm and 260-270mm, to accommodate specific fitment requirements.

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

Brand	YSS Suspension
Part Number	MZ366-290TRJ-40
Category	Suspension and 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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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