Staged recommendation
Ultra-endurance (single continuous push) — staged plan
A continuous ultra (Unbound XL, TCR, long solos) leaves two viable mid-event strategies. Option A: carry a pre-waxed spare chain and swap on course — maximum efficiency, zero post-event reset, ~150 g extra in the kit. Option B: carry a small oil bottle and apply over the wax when the chain goes dry — lighter kit, but you've committed to a chain-stripper degrease at home. Race vs recreational intent decides which. Wax emulsion drips are off the table either way — they need hours to cure that you simply don't have.
No wax emulsion drips mid-ultra. SS Drip, UFO Drip v2 etc. all need hours to set hard — you'll finish before they cure, meaning the top-up does nothing useful. Carry an oil (Synergetic) only.
Critical: Do NOT apply grease or heavy wet oils (Muc-Off Hydrodynamic, WD-40, generic mechanic's oils) to a waxed chain. Those contaminate deeply and create a much harder reset than a clean wet-ride oil like Synergetic.
- 1Pre-event (24h+ before)Wax the primary chain with a top immersive hot-meltRace mode: wax a second identical chain in the same pot session so you have a spare ready to swap (see Option A below).
- 2Event startStart clean-waxed — ride out the wax for as long as it holdsOn a fresh wax, expect 500–1000 km of clean performance on dry road, dropping to 150–300 km in heavy wet or extreme contamination. For a 1000 km+ ultra, assume the wax WILL run out before the finish — plan the mid-event action now.
- 3Mid-event — Option A (race / max efficiency): chain swapSwap to the pre-waxed spare chain on course~90 seconds with a quick link. Zero post-event degrease — just put the used chain in a pouch, swap in the spare, keep riding. At home: re-wax the used chain like normal, both chains stay in the wax ecosystem. Carry: spare chain + master link / chain tool + rag + a small bag for the old chain (~150 g extra). Best for podium-chasing or efficiency-obsessed riders.
- 4Mid-event — Option B (recreational / lighter pack): oil over waxcondition: wax depleted, rain, or sustained wetApply an oil over the wax — carry a small dripper bottleApply on the move or during a 30-second pause, continue immediately. Silca Synergetic is ZFC's published pick. Carries ~50 g vs ~150 g for Option A, but commits you to a chain-stripper solvent degrease at home (see stage 5). Wax emulsion drips (SS Drip, UFO Drip) are NOT viable mid-ultra — they need hours to cure that you don't have.
- 5Post-event (only if Option B was used)Chain-stripper solvent degrease, then re-waxWet-weather oil behaves like factory grease — boiling water and ultrasonic alone will not shift it. Use a proper chain stripper / solvent (mineral spirits, dedicated chain degreaser) with ultrasonic agitation. If you used Option A (chain swap), skip this stage — your used chain just gets re-waxed normally.