RS-R Black-i coilovers for the 2014-2015 Lexus IS250 RWD (GSE30) are engineered from the damper piston up for one job: going low without breaking the ride. Where a normal coilover bottoms out or rides like plywood at aggressive drop heights, Black-i has revised valving, extended lower-mount travel, and spring rates matched to the lowered range. You get the slammed stance your build wants with damping that still works over real-world pavement.
Black-i is RS-R’s purpose-built extreme-drop coilover. Where a normal coilover bottoms out or rides poorly at aggressive ride heights, Black-i is engineered from the damper piston up for cars that are going low — revised internal valving, longer perch travel, and spring rates matched to the extended drop. Still 36-level damper adjustable, still rebuildable. Built for slammed daily drivers who don’t want the ride quality to fall apart at height.
Features
Availability
This application is a special-order item from Japan. Lead time by standard sea freight is approximately 3–6 months. Expedited DHL/FedEx/UPS shipping from Japan is available for an upcharge when stock is on hand — contact us for current lead time.
What’s Included
Specifications
| Part Number | XBKT191M |
| Part Name | RS-R Black-i Coilovers |
| Vehicle | 2014-2015 Lexus IS250 |
| Chassis Code | GSE30 |
| Drivetrain | RWD |
| Damping Adjustment | 36-Level Single-Knob |
| Ride-Height Adjustable | Yes |
| Damper Construction | Monotube |
| 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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