Delivering to:
Collecting from:

Derailleurs

Front Derailleurs

Rear Derailleurs

Mountain Bike Derailleurs

Road Bike Derailleurs

Shifters

Compare (0/5)

Not sure what sized bike is best?

Answer a few short questions and we'll make a recommendation on which size is best for you.

Shimano Deore XT RD-M8000-SGS 11-Speed Rear Derailleur
32% Off Full Price Clearance

Shimano

Shimano Deore XT RD-M8000-SGS 11-Speed Rear Derailleur

$135.00 Full price
$135.00
Club price
$199.99 Full price
Shimano Rear Derailleur Deore M5120-SGS RD+ 2x11, 1x10, 2x10-speeds

Shimano

Shimano Rear Derailleur Deore M5120-SGS RD+ 2x11, 1x10, 2x10-speeds

$99.00 Full price
$99.00
Club price
$109.99 Full price
Shimano Altus Rear Derailleur 7/8 Speed M310 Black

Shimano

Shimano Altus Rear Derailleur 7/8 Speed M310 Black

$47.00 Full price
$47.00
Club price
$47.99 Full price
SRAM Derailler-RR 12S NX Eagle Black

SRAM

SRAM Derailler-RR 12S NX Eagle Black

$242.99 Full price
$242.99
Club price
$254.99 Full price
Shimano SLX RD-M7100 12 Speed Long Rear Derrailleur Shadow+

Shimano

Shimano SLX RD-M7100 12 Speed Long Rear Derrailleur Shadow+

$139.00 Full price
$139.00
Club price
$149.99 Full price
Shimano Deore RD-M6100 12-Sp for 51T Max Shadow+ Long Cage Rear Derailleur
20% Off Full Price

Shimano

Shimano Deore RD-M6100 12-Sp for 51T Max Shadow+ Long Cage Rear Derailleur

$103.00 Full price
$103.00
Club price
$129.99 Full price
Shimano Rear Derailleur RD-M3100 Alivio Shadow 9-Speed

Shimano

Shimano Rear Derailleur RD-M3100 Alivio Shadow 9-Speed

$75.00 Full price
$75.00
Club price
$79.99 Full price
SRAM REAR DER GX EAGLE 52T

SRAM

SRAM REAR DER GX EAGLE 52T

$285.00 Full price
$285.00
Club price
$294.99 Full price
Shimano Derailler-RR 7S/8S Tourney-Tx800 Black

Shimano

Shimano Derailler-RR 7S/8S Tourney-Tx800 Black

$29.00 Full price
$29.00
Club price
$32.99 Full price
SRAM REAR DER GX 2X11SP LONG BLK 00.7518.082.000
15% Off Full Price

SRAM

SRAM REAR DER GX 2X11SP LONG BLK 00.7518.082.000

$247.00 Full price
$247.00
Club price
$290.99 Full price
Shimano RD-U6000 Cues Rear Derailleur 10/11 Speed 50T Max

Shimano

Shimano RD-U6000 Cues Rear Derailleur 10/11 Speed 50T Max

$105.00 Full price
$105.00
Club price
$109.99 Full price
SRAM Derail-RR 9S X5 LG
15% Off Full Price

SRAM

SRAM Derail-RR 9S X5 LG

$96.00 Full price
$96.00
Club price
$112.99 Full price
SRAM Derailler-RR 11S NX

SRAM

SRAM Derailler-RR 11S NX

$189.00 Full price
$189.00
Club price
$192.99 Full price
Shimano RD-RX812 Rear Derailluer GRX 11-Speed for 42T

Shimano

Shimano RD-RX812 Rear Derailluer GRX 11-Speed for 42T

$182.00 Full price
$182.00
Club price
$209.99 Full price
Shimano Rear Derailleur 1x11 Deore M5100

Shimano

Shimano Rear Derailleur 1x11 Deore M5100

$105.00 Full price
$105.00
Club price
$119.99 Full price
Shimano Deraill-RR Xt 12Sp M8100 10-51T

Shimano

Shimano Deraill-RR Xt 12Sp M8100 10-51T

$199.00 Full price
$199.00
Club price
$209.99 Full price
Shimano Derailler-RR 11S Xt-M8000 Shadow MD
20% Off Full Price

Shimano

Shimano Derailler-RR 11S Xt-M8000 Shadow MD

$159.00 Full price
$159.00
Club price
$199.99 Full price
Shimano RD-U6020-10 Cues Rear Derailleur 10 Speed 39T Max

Shimano

Shimano RD-U6020-10 Cues Rear Derailleur 10 Speed 39T Max

$82.00 Full price
$82.00
Club price
$84.99 Full price
Shimano RD-U2000 Essa 8 Speed Rear Derailleur 45T Max

Shimano

Shimano RD-U2000 Essa 8 Speed Rear Derailleur 45T Max

$77.00 Full price
$77.00
Club price
$79.99 Full price
Shimano RD-M8120 REAR DERAILLEUR XT SHADOW+ 12-SPEED LONG 45T MAXIMUM 2x12
27% Off Full Price Clearance

Shimano

Shimano RD-M8120 REAR DERAILLEUR XT SHADOW+ 12-SPEED LONG 45T MAXIMUM 2x12

$152.00 Full price
$152.00
Club price
$209.99 Full price
Shimano RD-T8000 Deore XT Long Cage 10-Speed Rear Derailleur
24% Off Full Price

Shimano

Shimano RD-T8000 Deore XT Long Cage 10-Speed Rear Derailleur

$129.00 Full price
$129.00
Club price
$169.99 Full price
Pilo Derailleur Hangar - D24

Pilo

Pilo Derailleur Hangar - D24

$54.00 Full price
$54.00
Club price
$59.99 Full price
Shimano RD-M8130 XT Shadow+ Rear Derailluer 11-Speed 50T Maximum

Shimano

Shimano RD-M8130 XT Shadow+ Rear Derailluer 11-Speed 50T Maximum

$204.00 Full price
$204.00
Club price
$209.99 Full price
SRAM Derail-RR 10S Gx MD
15% Off Full Price

SRAM

SRAM Derail-RR 10S Gx MD

$134.00 Full price
$134.00
Club price
$157.99 Full price
BBB 'ROLLERBOYS' PULLEY SET 11T BLACK SHIM 9/10/11 spd

BBB

BBB 'ROLLERBOYS' PULLEY SET 11T BLACK SHIM 9/10/11 spd

$27.00 Full price
$27.00
Club price
$29.99 Full price
Shimano RD-TY300 Tourney Rear Derailleur 6/7speed
15% Off Full Price

Shimano

Shimano RD-TY300 Tourney Rear Derailleur 6/7speed

$21.00 Full price
$21.00
Club price
$24.99 Full price
Shimano RD-M3020 ACERA 7/8-SPEED BLACK 40T MAX

Shimano

Shimano RD-M3020 ACERA 7/8-SPEED BLACK 40T MAX

$47.00 Full price
$47.00
Club price
$49.99 Full price
Shimano A070 Rear Derailleur 7 Speed Tourney Axle Mount
19% Off Full Price

Shimano

Shimano A070 Rear Derailleur 7 Speed Tourney Axle Mount

$28.00 Full price
$28.00
Club price
$34.99 Full price
Shimano FD-TY601-L6 Front Derailleur Tourney Top Swing Dual Pull for 48T 66-69 3 x 6/7/8 Speed
21% Off Full Price

Shimano

Shimano FD-TY601-L6 Front Derailleur Tourney Top Swing Dual Pull for 48T 66-69 3 x 6/7/8 Speed

$18.00 Full price
$18.00
Club price
$22.99 Full price
Shimano Front Derailler Altus 8-Speed M313X6 HighMount

Shimano

Shimano Front Derailler Altus 8-Speed M313X6 HighMount

$36.00 Full price
$36.00
Club price
$39.99 Full price
Cube Rear Derailleur Hanger
26% Off Full Price

Cube

Cube Rear Derailleur Hanger

$55.00 Full price
$55.00
Club price
$59.99 Full price
Shimano Dura-Ace Di2 Braze-On Adaptor 34.9mm
31% Off Full Price

Shimano

Shimano Dura-Ace Di2 Braze-On Adaptor 34.9mm

$17.00 Full price
$17.00
Club price
$24.99 Full price
Shimano Alivio M3120-M 9 Speed Front Derailleur
16% Off Full Price

Shimano

Shimano Alivio M3120-M 9 Speed Front Derailleur

$40.00 Full price
$40.00
Club price
$47.99 Full price
BBB 'ROLLERBOYS' PULLEY SET 10T BLACK SHIM 7&8, CAMP 8,9,10

BBB

BBB 'ROLLERBOYS' PULLEY SET 10T BLACK SHIM 7&8, CAMP 8,9,10

$27.00 Full price
$27.00
Club price
$29.99 Full price
Sram Rear Derailleur Pulley Kit X01 / X01 DH / X1 / Force 1 X-Sync

SRAM

Sram Rear Derailleur Pulley Kit X01 / X01 DH / X1 / Force 1 X-Sync

$103.99 Full price
$103.99
Club price
$108.99 Full price
Shimano Sora R3000 9 Speed Triple Derailleur
15% Off Full Price

Shimano

Shimano Sora R3000 9 Speed Triple Derailleur

$62.00 Full price
$62.00
Club price
$72.99 Full price

Find Your Size

Step 1: Measure your height

  • Take off your shoes
  • Stand with your back straight against a wall
  • Balance a book on your head to mark your height on the wall
  • Measure your height by the distance from the floor to the mark
cm

Find Your Size

Step 2: Adjust your inseam

  • Based on your height, we’ve calculated a starting point.
  • You can measure your inseam by tucking a book between your legs so there is pressure but it isn’t uncomfortable.
  • Inseam typically falls with 5cm of the average.
cm

Find Your Size

Your results

For the we suggest the following size.

More comfort More speed
Height: --
Inseam: --
Adjusted Height: --

Find Your Size

We have saved your measurements.

Recommended sizes will now be highlighted on the page.

99 Bikes has a wide range of front and rear derailleurs to fit every bike. When it comes time to replace a damaged or worn out derailleur shop in-store or online for the best range and best prices in New Zealand. 99 Bikes has your road, mountain and commuter bike covered with a range of front derailleurs, rear derailleurs and pulley wheels to keep your bike running smoother for longer.
5% BEST PRICE GUARANTEE

5% BEST PRICE GUARANTEE

We beat any price by 5%
CLICK AND COLLECT

CLICK AND COLLECT

Live stock availability
CLUB 99 MEMBERSHIP

CLUB 99 MEMBERSHIP

Exclusive club benefits
FREE SHIPPING OVER $149*

FREE SHIPPING OVER $149*

*Excluding bikes/bulky items