RS-R Sports-i coilovers for the 2015-2020 Acura TLX balance daily-driver comfort with serious track capability on the same set of dampers. The 36-level single-knob adjustment, vehicle-specific spring rates, and full ride-height range let you dial the TLX in for the commute on Monday and for a canyon run or track day on Saturday without touching a tool beyond the damper click wheel.
The Sports-i is RS-R’s foundation street-and-canyon coilover — a 36-level single-knob monotube damper built in-house in Osaka, Japan, with full ride-height adjustment and vehicle-specific spring rates. It is engineered to be driven daily yet firm enough for spirited weekend use. Backed by RS-R’s 1-year / 12,000-mile warranty and available as a rebuildable, serviceable unit.
Features
What’s Included
Specifications
| Part Number | XSPIH900M |
| Part Name | RS-R Sports-i Coilovers |
| Vehicle | 2015-2020 Acura TLX |
| Damping Adjustment | 36-Level Single-Knob |
| Ride-Height Adjustable | Yes |
| Damper Construction | Monotube |
| Preset Approximate Height – Front | -30mm (-1.2inch) |
| Preset Approximate Height – Rear | -40mm (-1.6inch) |
| Maximum Adjustment Range – Front | 0mm to -100mm (0inch to -4.0inch) |
| Maximum Adjustment Range – Rear | -25mm to -60mm (-1.0inch to -2.4inch) |
| Recommended Adjustment Range – Front | -5mm to -50mm (-0.2inch to -2.0inch) |
| Recommended Adjustment Range – Rear | -25mm to -60mm (-1.0inch to -2.4inch) |
| Spring Rate – Front | 7.00 Kg/mm |
| Spring Rate – Rear | 5.10 Kg/mm |
| Upper Mount – Front | Rubber Bushings (OEM-style) |
| Upper Mount – Rear | Rubber Bushings (OEM-style) |
| Suspension Design – Front | True Coilover |
| Suspension Design – Rear | Divorced |
| Rebuildable | Yes |
| Warranty | 1 Year / 12,000 Miles |
| Notes | – |


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