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- Wheels
  
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- Hubs
  
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- Handlebars
  
  Road / Gravel Handlebars
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- Kickstands
  
  Double Kickstands
  Central Kickstands
  Rear Kickstands
- Accessories / Spare Parts
  
  Seat Clamps
  Quick Releases
  Free-hub Kit
Discipline
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Collection: Hubs

Bike Wheel Hubs: Road, Gravel & MTB

Discover Ursus bike hubs: precision-engineered for ultimate smoothness and durability. Minimize friction and boost speed in every cycling discipline.

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Road(6)
Gravel(6)
MTB(4)

Hub

U-GD.60 / Front 100x12mm Rear 142x12mm / 3 pawls(1)
U-MD.20 / Front Boost 110x15mm Rear Boost 148x12mm / 3 pawls(1)
U-MD.21 / Front Boost 110x15mm Rear Boost 148x12mm / 3 pawls(1)
U-MD.50 / Front Boost 110x15mm Rear Boost 148x12mm / 3 pawls(1)
U-MD.51 / Front Boost 110x15mm Rear Boost 148x12mm / 3 pawls(1)
U-RD.20 / Front 100x12mm Rear 142x12mm / 3 pawls(1)
U-RD.30 / Front 100x12mm Rear 142x12mm / 3 pawls(1)
U-RD.52 / Front 100x12mm Rear 142x12mm / 3 pawls(2)
U-RD.60 / Front 100x12mm Rear 142x12mm / 3 pawls(1)

Hubs Weight

350 g(1)
355 g(1)
366 g(1)
390 g(2)
393 g(1)
396 g(1)
405 g(1)
530 g(2)

Holes Number

21 – 2:1(2)
24 – 1:1(4)
28 – 1:1(4)

Bearings

Highly Smooth(8)
Xeramik™ - ceramic bearings(2)

Brake Compatibility

6 Hole Discs(2)
Center Lock Discs(8)

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Road(6)
Gravel(6)
MTB(4)

Hub

U-GD.60 / Front 100x12mm Rear 142x12mm / 3 pawls(1)
U-MD.20 / Front Boost 110x15mm Rear Boost 148x12mm / 3 pawls(1)
U-MD.21 / Front Boost 110x15mm Rear Boost 148x12mm / 3 pawls(1)
U-MD.50 / Front Boost 110x15mm Rear Boost 148x12mm / 3 pawls(1)
U-MD.51 / Front Boost 110x15mm Rear Boost 148x12mm / 3 pawls(1)
U-RD.20 / Front 100x12mm Rear 142x12mm / 3 pawls(1)
U-RD.30 / Front 100x12mm Rear 142x12mm / 3 pawls(1)
U-RD.52 / Front 100x12mm Rear 142x12mm / 3 pawls(2)
U-RD.60 / Front 100x12mm Rear 142x12mm / 3 pawls(1)

Hubs Weight

350 g(1)
355 g(1)
366 g(1)
390 g(2)
393 g(1)
396 g(1)
405 g(1)
530 g(2)

Holes Number

21 – 2:1(2)
24 – 1:1(4)
28 – 1:1(4)

Bearings

Highly Smooth(8)
Xeramik™ - ceramic bearings(2)

Brake Compatibility

6 Hole Discs(2)
Center Lock Discs(8)

10 products

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U-GD.60 Hub

U-GD.60 Hub

Type:

U-GD.60 Hub

Regular price €350,00

Sale price €350,00 Regular price

Unit price

/per

U-RD.52 Hub

U-RD.52 Hub

Type: Road / Gravel Hubs

U-RD.52 Hub

Regular price €235,00

Sale price €235,00 Regular price

Unit price

/per

U-RD.30 Hub

U-RD.30 Hub

Type: Road / Gravel Hubs

U-RD.30 Hub

Regular price €190,00

Sale price €190,00 Regular price

Unit price

/per

U-MD.50 Hub

U-MD.50 Hub

Type: MTB hubs

U-MD.50 Hub

Regular price €315,00

Sale price €315,00 Regular price

Unit price

/per

U-MD.21 Hub

U-MD.21 Hub

Type: MTB hubs

U-MD.21 Hub

Regular price €190,00

Sale price €190,00 Regular price

Unit price

/per

U-MD.51 Hub

U-MD.51 Hub

Type: MTB hubs

U-MD.51 Hub

Regular price €315,00

Sale price €315,00 Regular price

Unit price

/per

U-MD.20 Hub

U-MD.20 Hub

Type: MTB hubs

U-MD.20 Hub

Regular price €190,00

Sale price €190,00 Regular price

Unit price

/per

U-RD.60 Xeramik™ Hub

U-RD.60 Xeramik™ Hub

Type: Road / Gravel Hubs

U-RD.60 Xeramik™ Hub

Regular price €365,00

Sale price €365,00 Regular price

Unit price

/per

U-RD.52 Xeramik™ Hub

U-RD.52 Xeramik™ Hub

Type: Road / Gravel Hubs

U-RD.52 Xeramik™ Hub

Regular price €315,00

Sale price €315,00 Regular price

Unit price

/per

U-RD.20 Hub

U-RD.20 Hub

Type: Road / Gravel Hubs

U-RD.20 Hub

Regular price €180,00

Sale price €180,00 Regular price

Unit price

/per

Ursus

Since 1967, Ursus has been manufacturing high-quality components for cycling, automotive, and industrial applications in Italy. Reliable, innovative, and built to last, our products are designed to deliver consistent performance.

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