Best price for Shimano XT RD-M8100-SGS Rear Derailleur - 12-Speed, Long Cage, Black, For 1x
Best verified price
86.2% below the recorded typical price of $145.
This is the lowest price UponSale has ever recorded for this product.
2 stores compared · 1 fresh offer · last market update 23h ago
We score a price only against history we recorded ourselves. Until then this product shows its market range instead of a number we would be inventing.
You will be taken to cyclestore.co.uk. UponSale does not process payments and does not sell this product.
Market summary
UponSale currently tracks this product at 2 stores. The lowest verified price among 1 fresh offer is $19.99. That is 86.2% below its recorded median of $145.
What our data shows
- This is the lowest price UponSale has recorded for this product.
Current prices for Shimano XT RD-M8100-SGS Rear Derailleur - 12-Speed, Long Cage, Black, For 1x
2 stores tracked| Store | Match | Item price | Shipping | Total | Stock | Freshness | Action |
|---|---|---|---|---|---|---|---|
| CyclestoreBest verified cyclestore.co.uk | Exact match | $19.99 | unknown | $19.99 + ship | Unknown | Checked 13h ago | View offer |
| Coloradocyclist coloradocyclist.com | Black · New | $145 | unknown | $145 + ship | Unknown | Price may be stale | View offer |
Ranked by the lowest comparable price among offers that pass our freshness, variant and anomaly checks. Where a store does not publish a shipping cost we say so rather than assuming it is free. All amounts are the store’s own published prices at the time shown.
Specifications
1 stated- Colour
- Black
What retailers state about Shimano XT RD-M8100-SGS Rear Derailleur - 12-Speed, Long Cage, Black, For 1x, normalised by UponSale. Confirm anything that matters on the retailer’s own page before buying.
Shimano XT RD-M8100-SGS Rear Derailleur - 12-Speed, Long Cage, Black, For 1x price history
Recorded by UponSalePrice history is just getting started
We began tracking this product recently. Current prices are already available above; the chart becomes useful as new observations arrive — we record one series point per day per store.
Over the day UponSale has been recording this product, prices for Shimano XT RD-M8100-SGS Rear Derailleur - 12-Speed, Long Cage, Black, For 1x ran from $145 to $145. The current lowest verified price is $19.99 and the recorded median is $145.
Is Shimano XT RD-M8100-SGS Rear Derailleur - 12-Speed, Long Cage, Black, For 1x a good deal today?
Buy now or wait?
not enough dataNot enough history yet
We need at least two weeks of observations from two or more stores before we will call a price good or bad.
This is a description of what we observed, not a prediction. We do not forecast future prices.
Market price snapshot
Against the rest of the category
Rear Derailleur →Among the 16 rear derailleur products we hold a current price for, this sits in the cheapest 13%.
Category figures are computed from the prices we currently hold across every store we track, not from a manufacturer’s list. They move as the catalogue does.
Alternatives worth comparing
SRAM Rival AXS Rear Derailleur - 12-Speed, 36t Max, (Battery Not Included), Aluminum Cage, Black, E1
SRAM RED AXS Rear Derailleur - 12-Speed, Medium Cage, 36t Max, (Battery Not Included), Black, E1
Shimano SLX RD-M7100-SGS Rear Derailleur - 12-Speed, Long Cage, Black, For 1x
Shimano Ultegra RD-R8000 Rear Derailleur Short / 35 / 30
SRAM Rival 22 Rear Derailleur - 11 Speed, Short Cage, Black/Silver
SRAM X01 Eagle Rear Derailleur - 12-Speed, Long Cage, 52t Max, Red
How UponSale tracks this product
Stores compared
$125.01 spreadData provenance
- Stores
- 2 tracked
- Fresh offers
- 1
- Observations
- 1 days recorded
- Last update
- 23h ago
- First tracked
- August 30, 2026
- Lowest ever seen
- $145
Every price above was read from a retailer’s own published data and stored with its timestamp. The history is ours, not a retailer’s claim.
How we calculate this
Where prices come from. We read the product data each retailer publishes on its own site, unhurriedly and within the rules that retailer sets. We never work around an access control and we never buy collected data of uncertain provenance.
What “verified” means. An offer can win best price only if it is inside our freshness window, matched to the exact variant, in stock, and free of an unresolved price anomaly. “Best verified price” means lowest among the fresh offers we track — not the lowest price on the internet.
How history works. Every price we observe is stored with its source and timestamp. Daily market low, median and high come from those observations, so the price history on this page is ours, not a retailer’s claim.
What we exclude. Stale offers, mismatched variants, bundles compared against single items, and prices that move implausibly without corroboration from another store.
Images. Product photographs come from the retailer they sit beside, loaded from their own image host. We do not re-host them and claim no rights in them.