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The Progressive Suspension 990 Series shocks are engineered for enhanced performance and durability in heavy-duty applications. Featuring a high-pressure gas monotube design, these shocks deliver consistent damping and reliable handling under demanding conditions. The aluminum body construction ensures durability while maintaining a lightweight profile for improved vehicle responsiveness.
Adjustability is a key feature of these shocks, with easily accessible knobs for high- and low-speed compression damping, allowing for fine-tuning to suit various riding conditions. The 0.4-inch adjustable height eyelet provides additional customization options. A captured jounce bumper ensures smooth and controlled bottoming, reducing shock wear and improving ride quality. The remote reservoir allows for increased oil capacity and heat dissipation, which is essential during prolonged or aggressive riding sessions.
Constructed with a linear rate coil spring, these shocks provide predictable and consistent suspension response. Deflective disc damping technology offers superior control and comfort, making them suitable for applications requiring heavy-duty performance. Sold in pairs, they are designed to be measured center-of-eyelet to center-of-eyelet, ensuring compatibility with a variety of vehicle setups. Made in the U.S.A., the 990 Series shocks may slightly alter the head angle, providing quicker steering response. Heavy-duty applications are recommended for bikes operating at or near maximum load ratings over 50% of the time. Before installation, verify that the length and travel do not interfere with clearance points such as swingarm, exhaust, or tires to ensure proper fitment and optimal performance.
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