YSR Dynamic Pro Sport Inverted Coilovers Mercedes-Benz SLK-Class R171 04-11

YSR Dynamic Pro Sport Inverted Coilovers for Mercedes-Benz SLK-Class R171 (2004-2011) – 55mm Inverted Monotube Coilovers, 33-Way Adjustable Yellow Speed Racing Dynamic Pro Sport Inverted coilovers for the Mercedes-Benz SLK-Class R171 (2004-2011). They take the Dynamic Pro Sport and add a 55mm inverted monotube damper for extra strength, giving a refined road ride with handling that also works on track. The inverted design holds more damper oil to help shed heat, keeps that oil further from brake heat, resists side loads better and reduces unsprung weight for a quicker suspension response. The larger body also protects the shaft seals from premature failure, and an aluminium ring seal keeps out corrosion and debris. Damping is adjustable through 33 levels from the bottom of the coilover, with compression and rebound adjusted together. Where fitted, rear Sustech inverted dampers can be adjusted without removing any parts. On cars with rear wishbone suspension the rear damper shaft is thickened to 20mm for extra strength. Specifications Damper: 55mm inverted monotube, zinc-plated steel body Damping: 33-level adjustable (compression and rebound together) Ride height: Full-length adjustment via the lower bracket Spring rates: 8kg/mm front, 15kg/mm rear Front strut: Inverted strut Rear strut: Standard strut Options: some details vary by option, see the spec table for your chosen option Key Features 55mm inverted monotube dampers for strength and rigidity Extra oil capacity for better heat dissipation Reduced unsprung weight for quicker response Aluminium ring seal against corrosion and debris 33-level adjustable damping 20mm rear damper shaft on rear wishbone cars Choice of rubber or pillow ball front top mounts on many cars What's in the Kit? 2 x front coilovers with springs 2 x rear dampers and springs Fitment Mercedes-Benz SLK-Class R171 (2004-2011) Choose the option that matches your car: Aluminium Pillow Ball Upper Mount; Rubber Upper Mount Not suitable for: models or versions not listed above. Please check your model, drive type and strut size before ordering. Installation The coilovers replace the standard dampers and springs. Set the ride height and spring preload, let the suspension settle, then recheck the height and have a four-wheel alignment carried out. We recommend professional fitting. Please note: Pillow ball top mounts can increase suspension noise. Choose rubber top mounts if noise is a concern. Upgrade Further Other Yellow Speed Racing coilovers for this car: YSR Premium Competition Coilovers Mercedes-Benz SLK-Class R171 04-11; YSR Air Suspension Coilovers Mercedes-Benz SLK-Class R171 04-11; YSR Club Performance 2-Way Coilovers Mercedes-Benz SLK-Class R171 04-11; YSR Dynamic Pro Sport Coilovers Mercedes-Benz SLK-Class R171 04-11. What does the inverted design do? It makes the damper stronger and more resistant to side loads, holds more oil for cooling and reduces unsprung weight, improving both comfort and handling. Should I choose rubber or pillow ball top mounts? Rubber mounts are quieter and better for road use. Pillow ball mounts are more precise but transmit more noise. How is the damping adjusted? A 33-level adjuster at the bottom of each coilover sets compression and rebound together. Can I adjust the ride height without changing preload? Yes. Ride height is set by winding the lower bracket up or down, so spring preload and damper travel stay the same. Do I need a wheel alignment after fitting? Yes. Changing the ride height alters the suspension geometry, so a four-wheel alignment should be carried out once the car has settled. What warranty is included? Yellow Speed Racing cover Dynamic Pro Sport Inverted coilovers with a 12 month limited warranty against defects in materials and workmanship.