Streetec Sleeve 190 mm – air spring conversion for BC Racing coilovers
Already running coilovers, but tempted by air? The Streetec Sleeve 190 mm conversion replaces the steel spring on your BC Racing suspension with an air spring while retaining the existing damper. Select the damper body thread and piston rod adapter from the menus.
The price is for one air spring. Air supply and management are sold separately. The braided hose and air line adapters are also available as separate accessories.
Dimensions and specifications
| Air spring type | Sleeve 190 mm |
|---|---|
| Width | 111 mm |
| Inflated height | 225 mm |
| Deflated height | 75 mm |
| Air connection | Lower connection, 1/8-inch G thread |
Selecting the mounting dimensions
Damper body: Measure the outside diameter over the body thread. The air spring mounts on this thread in place of the lower spring perch. Available threads are M44×1.5, M50×1.5 and M53×2.0.
Piston rod: Measure the diameter of the smooth shaft that slides into the damper, then the outside diameter of the threaded tip. For example, 20–12 means a 20 mm shaft and a 12 mm threaded section. With a 12.5 mm shaft, the threaded tip diameter does not affect selection.
Check the available space
The conversion suits many BC Racing coilovers, but check the space around the bellows in relation to the body, wheel and suspension components. Rear suspension with a separate spring and damper may require a vehicle-specific solution.
Product image is for illustration.
Suomi

