BMW F900 R Chain Size and Sprocket Teeth
GarageDex's manufacturer-catalogue data shows the 2024-2026 BMW F900 R uses a 525 chain with 17-tooth front and 44-tooth rear sprockets from the factory. (122 links) Chain and sprocket sizing varies by year - see the table for each range.
Chain and sprocket fitment by year
| Years | Chain | Links | Front teeth | Rear teeth |
|---|---|---|---|---|
| 2024-2026 | 525 | 122 | 17 | 44 (JTR10) |
| 2023 | 525 | 122 | 17 (JTF704RB) | 44 (JTR10) |
| 2022 | 525 | 122 | 17 (JTF704RB) | 44 (JTR10) |
| 2020-2021 | 525 | 122 | 17 (JTF704RB) | 44 (JTR10) |
Part numbers in parentheses are the manufacturer's stock-gearing sprocket codes, useful for matching a replacement.
Chain and sprockets for the BMW F900 R
Match the pitch (525) and tooth counts in the table - chain and sprockets are a matched set, and a mismatched pitch will not fit the sprockets at all.
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Frequently asked
What chain size does a BMW F900 R use?
GarageDex's manufacturer-catalogue data shows the 2024-2026 BMW F900 R uses a 525 chain with 17-tooth front and 44-tooth rear sprockets from the factory. (122 links) Chain and sprocket sizing varies by year - see the table for each range.
What is the stock gearing on a BMW F900 R?
17-tooth front and 44-tooth rear from the factory, part numbers rear JTR10.
What changes if I go +2 teeth on the rear sprocket?
Going up 2 teeth on the rear sprocket (or down 1-2 on the front) lowers the gearing: quicker acceleration off the line, but a lower top speed, and the chain usually needs to be 1-2 links longer to keep enough wrap on the front sprocket - a shop or the sprocket's fitment chart will confirm the exact link count for that combination. This is a generic mechanical rule, not a claim about this specific model's aftermarket options.
How many links does a BMW F900 R chain have?
122 links at stock length and gearing, per the manufacturer catalogue.
Same bike, other specs: BMW F900R, XR battery size.
Other BMW models
Source: JT Sprockets - Online Catalogue, a chain and sprocket manufacturer's own application catalogue. Chain and sprocket sizing is factory-stock as JT publishes it - aftermarket gearing changes (see the FAQ) are not reflected here.