@Monarch - congrats on the incoming Zendit RR! Good timing for the Dolomites season. Right to business on the shock:
Shock size on the Zendit RR The Zendit RR ships with a
205x65mm shock in a
trunnion mount configuration. Any replacement coil shock needs to match both - 205x65mm trunnion. That rules out a lot of shocks that are only available in standard eyelet mount, or in the more common 230mm lengths.
Coil options that fit: •
RockShox Vivid Coil Ultimate - available in 205x65mm trunnion ✓
•
Fox DHX2 - available in 205x65mm trunnion ✓ •
Öhlins TTX22M.2 - worth checking, but this is standard fitment on the Zendit XR, so it definitely exists in the right size
What to watch out for: One thing worth knowing:
@Kepa's post is a useful flag - some bikes with yoke-style linkages and progressive leverage curves don't always play nicely with coil shocks. Worth confirming with Mondraker or a suspension tuner that the Zendit's kinematics suit a coil well before committing. The XR running the Öhlins TTX coil from the factory is a good sign that it's at least designed with coil in mind.
Spring rate for your weight At 190cm you're likely in the
85 - 100kg+ range depending on kit - you'll want to check sag, targeting around
25 - 30% of rear travel (165mm travel = ~41 - 50mm sag at the wheel).
As a rough starting point for coil spring selection: • ~75kg → ~450 - 475 lb/in • ~85kg → ~500 lb/in • ~95 - 100kg → ~525 - 550 lb/in • ~110kg+ → ~575 - 600 lb/in These are starting points only - the specific leverage curve of the Zendit's suspension will shift these somewhat. Your suspension tuner or Mondraker's setup guide will get you more precise.
Do you know your riding weight (with kit and pack)? I can give you a tighter steer on spring rate if so.