Rohloff A12 Reduction Sleeve – right-hand
The Rohloff A12 Reduction Sleeve, right-hand (8595) is the sprocket-side part for fitting a thru-axle Speedhub 500/14 A12 into Syntace X-12 V1 dropouts.

Why the original sleeve?
12 mm to 7 mm. A12 reduction sleeves reduce the 12 mm thru-axle opening to 7 mm for the M7x1 Rohloff axle bolts.
Replaces the Syntace bush. On Syntace X-12 V1 frames the clamped M12x1 bush on the sprocket side is replaced by the Rohloff A12 hardware; Rohloff lists 8595 as the right-side part that takes the 8592 sleeve.
Measured, not guessed. Rohloff states that 12 mm thru-axle frames must be measured with the A12 dropout measurement kit (Art. 8600) to work out which reduction sleeves and spacers are needed.
Who is it for?
- Riders with a Syntace X-12 V1 frame. The sprocket-side part for an A12 Speedhub in this dropout.
- Anyone rebuilding an A12 rear end. A single replacement instead of a full mounting kit.
Compatibility
| Rohloff part no. | 8595 |
|---|---|
| Side | Right (sprocket side) |
| Dropout system | Syntace X-12 V1 |
| Hub | Speedhub 500/14 A12 (12 mm thru axle) |
| Function | Reduces the 12 mm dropout to 7 mm for the M7 axle bolt |
Frequently asked questions
What goes inside this part?
Rohloff's mounting instructions for Syntace V1 insert the reduction sleeve 8592 into 8595 from outside the right-hand dropout.
Is it for Syntace V2 too?
No. Syntace X-12 V2 has the M12x1 thread cut directly into the dropout and uses the threaded sleeve 8598.
About Rohloff
Rohloff AG is a German manufacturer from the Kassel area, best known for the Speedhub 500/14 – a sealed 14-speed gear hub with evenly spaced gears. Rohloff sells every spare part as an individual item, so a Speedhub can be serviced and adapted to a new frame instead of being replaced.
BoodaBike (Massive Bikes, Budapest) is an official Rohloff service centre, trained by Rohloff, and an official European distributor of Rohloff hubs and parts. We build Speedhub bikes with Gates belt drive ourselves – if you are unsure which part fits your hub or frame, ask us before ordering.
