Rohloff Speedhub 500/14 CC DB OEM2 – 135 mm - 32H - Silver
The Rohloff Speedhub 500/14 CC DB OEM2 (135 mm O.L.D.) is the 14-speed gear hub with a quick-release axle, disc brake hub cap and OEM2 axle plate – for frames with an IS2000 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 CC DB OEM2?
Wide range, 14 steps. A 526% range means the highest gear is 5.26 times the lowest. The 14 steps of the CC DB OEM2 are evenly spaced at about 13.6%, so you never hunt for the right gear. 
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. 
Made for a Gates belt. Belt-drive frames are usually built around a Speedhub. Fit a Carbon Drive sprocket on the Rohloff lock-ring carrier for a clean, quiet drivetrain. 
Torque support on the brake mount. The OEM2 axle plate anchors the hub torque on the rearmost hole of an IS2000 brake mount. With a disc brake it is combined with a SPEEDBONE or Monkey Bone. 
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. 
One shifter, no front mech. All 14 gears sit on one twist shifter with two cables – no front derailleur, no chain jumping between rings. Shift while rolling or standing; ease off the pedals as you do.
Quick-release axle for vertical dropouts
The CC hub has a hollow axle for a standard quick-release skewer. Wheel removal stays simple: the external gear mech comes off by loosening one screw, then the wheel comes out like any other.
Rohloff supplies this version without a chain tensioner; if your frame has no tensioning of its own, add one (8250).
Belt drive, the BoodaBike way
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.
- Riders with quick-release frames. The CC axle takes a standard quick-release skewer, so the wheel comes out without special tools.
- Belt-drive converts. Swap chain and cassette for a clean, quiet Gates belt – the Speedhub is the hub most belt frames are designed around.
- Riders who value comfort. Shifting at a standstill and one simple twist shifter make every ride relaxed – useful in town and on long climbs.
Compatibility and specifications
| Model | Rohloff Speedhub 500/14 CC DB OEM2 |
|---|---|
| Rohloff part numbers | 32-hole: silver 8025Z, red 8026Z, black 8027Z; 36-hole: silver 68025Z, red 68026Z, black 68027Z |
| Gears / range | 14 gears, 526% total range, three planetary gear sets in an oil bath |
| Axle | Hollow quick-release axle (CC) |
| O.L.D. (rear spacing) | 135 mm |
| Torque support | OEM2 axle plate – anchors the output torque of the hub to the rearmost mounting hole of an IS2000 disc brake mount. |
| Suits | Frames with vertical dropouts and a quick-release rear wheel, with an IS2000 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 quick-release 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); OEM2 axle plate; twist shifter, shifter cables and housing with ferrules; 16-tooth splined sprocket; flange support rings |
| Order separately | SPEEDBONE (8550) or Monkey Bone (8553 for 160 mm / 8554 for 180 mm rotors, IS to PM adapter) – needed when the OEM2 plate is used together with a disc brake; 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 | Approved in dedicated T (tandem) or C (cargo) versions, max. 130 Nm input torque – on request |
| 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 |
CC (quick-release) disc-brake versions compared
| CC DB | Standard axle plate, 135 mm. The classic Rohloff setup: the kit comes with the Standard axle plate and the mounting hardware. |
|---|---|
| CC DB OEM | OEM axle plate, 135 mm. Made for frames with reinforced, elongated vertical dropouts that are designed for the Speedhub. |
| CC DB OEM2 – this product | OEM2 axle plate, 135 mm. Anchors the output torque of the hub to the rearmost mounting hole of an IS2000 disc brake mount. |
| CC DB PM | PM axle plate, 135 mm. Anchors the output torque to the rearmost mounting hole of a Postmount disc brake mount, via the PM Bone. |
| CC DB XL | Standard axle plate, 170 mm. The classic Rohloff setup: the kit comes with the Standard axle plate and the mounting hardware. |
| CC DB OEM XL | OEM axle plate, 170 mm. Made for frames with reinforced, elongated vertical dropouts that are designed for the Speedhub. |
| CC DB OEM2 XL | OEM2 axle plate, 170 mm. Anchors the output torque of the hub to the rearmost mounting hole of an IS2000 disc brake mount. |
| CC DB PM XL | PM axle plate, 170 mm. Anchors the output torque to the rearmost mounting hole of a Postmount disc brake mount, via the PM Bone. |
| CC DB OEM2 XXL | OEM2 axle plate, 190 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 for the OEM2 axle plate?
With a disc brake the OEM2 plate is used together with a SPEEDBONE (8550) or a Monkey Bone (8553 for 160 mm, 8554 for 180 mm rotors). Rohloff also notes that the frame manufacturer must approve torque support on the brake mount; otherwise it is at the rider's own risk. These parts are sold separately in our shop.
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.
How much maintenance does it need?
An oil change every 5000 km or once a year. Rohloff notes the hub keeps working even if some oil is lost, but delaying the oil change can damage the gears. The warranty is two years from purchase; wear parts such as seals, sprockets, shifter grip rubber and rotors are excluded.
Can it go on a tandem or cargo bike?
Rohloff approves the Speedhub 500/14 for tandem and cargo use in dedicated versions (article suffix T or C), with a maximum input torque of 130 Nm at the hub sprocket. This listing is the standard version – ask us for the T or C version.
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.