Rohloff Speedhub 500/14 A12 DB PM – 142 mm - 32H - Silver
The Rohloff Speedhub 500/14 A12 DB PM (142 mm O.L.D.) is the 14-speed gear hub with a 12 mm thru axle, disc brake hub cap and PM axle plate – for frames with a Postmount disc brake mount. 14 evenly spaced gears, a 526% range and a sealed oil bath give you a drivetrain that works with a chain or a Gates belt and needs little more than a yearly oil change.
Why the Speedhub 500/14 A12 DB PM?
526% in one hub. From the lowest to the highest of its 14 gears the A12 DB PM covers a 526% range, in steps of about 13.6% (Rohloff figure) – no overlapping or duplicate ratios as on a double chainring. 
Closed and oil-lubricated. Three planetary gear sets, enclosed and lubricated by oil. The regular job is an oil change every 5000 km or once a year with the Rohloff oil change kit. 
Belt or chain. With a single rear sprocket the A12 DB PM runs a chain or a Gates Carbon Drive belt; for the belt, Rohloff prescribes the lock-ring splined carrier (8540L or 8540SL). 
Torque support on the Postmount. The PM axle plate passes the hub torque to the rearmost hole of the Postmount brake mount through the PM Bone (8555), which is ordered separately. 
Disc brake hub cap. The DB hub cap carries a special Rohloff 4-hole rotor, 160 to 220 mm, for 1.8, 2.0 or 2.3 mm brake systems. The rotor mounting screws come with the hub. 
Change gear at a standstill. Stopped on a climb in too high a gear? Twist down before you set off. Shifting works rolling or stationary; just take the pressure off the pedals for a moment.
12 mm thru axle, measured to your frame
Thru-axle dropouts differ between frame makers (Shimano, DT/Maxle, Syntace, SRAM UDH and others). Rohloff therefore requires the frame to be measured with the A12 dropout measurement kit (8600) before an A12 hub is fitted; the result tells you which reduction sleeves and spacers (8592–8599) you need.
The DB hub cap places the rotor 16.3 mm from the dropout, as the IS1999 standard asks. Send us your frame details – as an official Rohloff service centre we check the fit with you.
Built for belt drive
At BoodaBike (Massive Bikes) we started in 2013 by fitting Gates belt drives and gear hubs, and our own BoodaBike Pulse is a belt-drive touring bike with a Rohloff Speedhub.
For a Carbon Drive sprocket Rohloff specifies the lock-ring splined carrier (8540L for the standard or 8540SL for the slim chainline); the 16-tooth sprocket in the kit is for chain use. Tell us your frame and we help you pick the carrier and sprocket.
Who is it for?
- Touring cyclists. Loaded climbs in the low gears and steady cruising on top – with a hub that shrugs off bad weather.
- Gravel and MTB riders with thru-axle frames. The A12 axle brings the Speedhub to 12 mm thru-axle frames.
- Belt-drive converts. Swap chain and cassette for a clean, quiet Gates belt – the Speedhub is the hub most belt frames are designed around.
- Year-round commuters. Salt, slush and grit do not reach the gears; the yearly oil change is the main job.
Compatibility and specifications
| Model | Rohloff Speedhub 500/14 A12 DB PM |
|---|---|
| Rohloff part numbers | 32-hole: silver 8095PM, red 8096PM, black 8097PM; 36-hole: silver 68095PM, red 68096PM, black 68097PM |
| Gears / range | 14 gears, 526% total range, three planetary gear sets in an oil bath |
| Axle | 12 mm thru axle (A12) |
| O.L.D. (rear spacing) | 142 mm (a 148 mm Boost version exists – Rohloff article suffix B, ask us) |
| Torque support | PM axle plate – anchors the output torque to the rearmost mounting hole of a Postmount disc brake mount, via the PM Bone. |
| Suits | Modern frames with 12 mm thru-axle dropouts, with a Postmount disc brake mount |
| Brake | Disc brake (DB) hub cap for a special Rohloff 4-hole rotor (Ø160–220 mm, 1.8 / 2.0 / 2.3 mm); rotor not included |
| Gear mech | External gear mech with twist shifter and two shifter cables; Rohloff also builds this version with the electronic E-14 gear mech (separate article) |
| Belt drive | Gates Carbon Drive compatible with the Rohloff lock-ring splined carrier (8540L / 8540SL) and a Carbon Drive sprocket |
| In the kit | Speedhub 500/14 hub with thru axle; disc brake (DB) hub cap for the special Rohloff 4-hole rotor, with rotor mounting screws; external gear mech (transfer box and cable box); PM axle plate; twist shifter, shifter cables and housing with ferrules; 16-tooth splined sprocket; flange support rings |
| Order separately | PM Bone (8555) – required with every PM axle plate; it also works as a brake adapter, so the next-larger brake rotor is needed; A12 reduction sleeves / spacers (8592–8599), worked out with the Rohloff A12 dropout measurement kit (8600) – a correct A12 mount is not possible without them; Rohloff 4-hole brake rotor that matches your brake (rotor not included; the rotor mounting screws are included); Chain tensioner – not included; needed if the frame has no chain tensioning of its own (Rohloff names horizontal dropouts shorter than 25 mm and full-suspension frames with chain growth) |
| Tandem / cargo | Not approved for tandem or cargo use (PM versions) |
| Service tool | Sprocket remover tool 8508 (135/142/170/177 mm hubs) |
| Spokes | 32 or 36 holes; spokes with a 2.9 mm head length required |
A12 (thru axle) disc-brake versions compared
| A12 DB OEM2 | OEM2 axle plate, 142 mm. Anchors the output torque of the hub to the rearmost mounting hole of an IS2000 disc brake mount. |
|---|---|
| A12 DB PM – this product | PM axle plate, 142 mm. Anchors the output torque to the rearmost mounting hole of a Postmount disc brake mount, via the PM Bone. |
| A12 DB OEM2 XL | OEM2 axle plate, 177 mm. Anchors the output torque of the hub to the rearmost mounting hole of an IS2000 disc brake mount. |
| A12 DB PM XL | PM axle plate, 177 mm. Anchors the output torque to the rearmost mounting hole of a Postmount disc brake mount, via the PM Bone. |
| A12 DB OEM2 XXL | OEM2 axle plate, 197 mm. Anchors the output torque of the hub to the rearmost mounting hole of an IS2000 disc brake mount. |
Frequently asked questions
What else do I need to order with the PM version?
The PM Bone (8555). Rohloff makes it a required part for every PM axle plate and it is not in the hub kit. Because the PM Bone also acts as a brake adapter, you need the next-larger Rohloff brake rotor. PM versions are not approved for tandem or cargo bikes.
Do I really need the A12 measurement kit?
Yes. Rohloff states that A12 frames must be measured with the dropout measurement kit (8600) to work out the reduction sleeves (8592–8599); without them the hub cannot be mounted correctly. We supply the sleeves and help with the measurement.
Can I use it with a Gates belt drive?
Yes, in a belt-ready frame. Rohloff specifies the lock-ring splined carrier (8540L standard or 8540SL slim chainline) for Carbon Drive sprockets. We build belt-drive Rohloff bikes ourselves and supply the matching parts.
32 or 36 spoke holes?
Both are available in silver, red and black. Whichever you choose, Rohloff requires spokes with a 2.9 mm long, burr-free head – other head lengths can damage the hub flange. Ask us about the right spokes.
What does the hub need over the years?
Mainly oil: change it every 5000 km or once a year with Rohloff cleaning and all-season oil. Wear parts – seals, sprocket and carrier, shifter grip rubber, rotors – are replaced as needed; the hub itself carries a two-year Rohloff warranty from purchase.
About Rohloff
Rohloff AG is based in Fuldatal, Germany, and makes the Speedhub 500/14 – a 14-speed gear hub known for its wide range and its sealed oil bath – together with its shifting parts, axle plates, spokes and service tools.
BoodaBike (Massive Bikes, Budapest) is an official Rohloff service centre trained by Rohloff and an official European distributor of Rohloff hubs and parts. We fit, convert and service Speedhubs and help you choose the right version for your frame.