Choosing a replacement rear shock for a trail or all-mountain bike starts with fit and ends with feel. The RockShox Deluxe Select+ RT in 210x55mm is a specific rear shock option that aims to keep that decision simple. At USD 149.40, it brings RockShox's air-spring design and a clean damper setup to bikes that match this size.
Quick Verdict
This shock is worth buying when your frame is built around this eye-to-eye length and stroke and you want a plush air spring with a simple firm lever for climbs and tamer sections. If your bike uses a different shock size, or you prefer more tuning knobs, keep looking.
Who It Suits
Trail and all-mountain riders who want a straight-ahead air shock without a complicated dial setup. It's also rated for e-bike use, so it suits an electric mountain bike without requiring extra upgrades.
What Stands Out
The headline feature here is the DebonAir air spring, which is designed to feel plush at the start of the stroke while staying supportive deeper in the travel. The RT damper adds a simple two-position lever with Open and Firm modes, and the maximum air pressure is 325 PSI.
Meaningful Trade-offs
The shock ships without hardware or bushings, so you'll need to reuse compatible spacers or bushings from your existing shock. The shock's dimensions are specific to frames with those exact mounting points, so it's not a universal fit. The damper adjusts via a two-position lever, so you don't have to manage a lot of dials.
Product Notes
RockShox Deluxe Select+ RT Rear Shock 210x55mm
This is a brand new OE-packaged air shock. The DebonAir spring and two-position lever deliver a simple, predictable setup, but the damper's adjustability is limited to Open and Firm.
Bottom Line
If this size fits your frame, the RockShox Deluxe Select+ RT offers a plush air spring, a simple firm lever, and e-bike compatibility at USD 149.40. Just remember that the shock ships without hardware, so plan to reuse your existing bushings or spacers.
