Triumph Street Triple R Fork Seals
The Triumph Street Triple R runs a 41 mm upside-down front fork (Kayaba 41mm USD (Aprilia Dorsoduro 900 / Shiver 900 / BMW G310 / Triumph Street Triple group)).Every kit here is verified by the manufacturer to fit this exact bike. Fork seals can share a size and still not seat in a different fork, so we only list what is confirmed for your bike.
- Fork tube41 mm
- Fork typeUpside-down
- ForkKayaba 41mm USD (Aprilia Dorsoduro 900 / Shiver 900 / BMW G310 / Triumph Street Triple group)
| Kit | Years | Seal size | Replaces OEM |
|---|---|---|---|
| 55-117 | 2013–2017 | 41x53x8 | Aprilia 2B004402 |
| 55-119 | 2021–2022 | 41x54x11 | BMW 31422312838, BMW 31428358444 |
| 57-107 | 2013–2017 | n/a | n/a |
| 56-129 | 2013–2017 | n/a | n/a |
Verified fork kits we stock for your Triumph Street Triple R

Fork Seal Kit
Fork Oil Seal Kit — Aprilia Dorsoduro 900
$18.24

Fork Seal Kit
Fork Oil Seal Kit — BMW F650 (1997-1999) + 353
$18.24

Fork Seal Kit
Fork Dust Seal Kit — BMW G310GS (2022-2025) +
$20.62

Fork Seal Kit
Fork Oil & Dust Seal Kit — BMW G310GS
$39.78
Fork oil for your Triumph Street Triple R
A fork-oil change on the Triumph Street Triple R uses 10wt fork oil. Factory fill: Kayaba G10 (SAE 10) — Showa SS-8 on some.













