165 mm Crankset with 34T Narrow-Wide Chainring 104 BCD Square Taper Aluminium Black

Shorter crank arms for trails with roots and ruts

If your pedals often clip roots or the sides of ruts, a shorter crank arm can give you more room. This 165 mm crankset pairs square-taper arms with a 34T narrow-wide ring for a compatible single-ring drivetrain. On the same bike, each pedal axle sits 5 mm higher at the bottom of the stroke than with 170 mm arms.

The 34T ring suits rolling trails and hilly commutes where you want a lower gear than 36T. With the same cassette, it lowers every gear by about 5.6%. If you already use a 34T ring, you can switch to shorter arms and keep the same gear ratios.

Key Features

• The 165 mm arms give you a smaller pedal circle than 170 mm arms.
• The 34-tooth ring gives lower gearing than 36T when paired with the same cassette.
• Alternating narrow and wide teeth help keep a compatible chain seated over uneven ground.
• The four-bolt 104 mm mount lets you replace the chainring separately when it wears.

Specifications

• Crank arm length — 165 mm
• Bottom bracket interface — square taper
• Crank arm material — aluminium alloy
• Crank arm weight — approximately 610 g per pair
• Chainring — 34 teeth with a narrow-wide profile
• Chainring material — 7075 aluminium alloy
• Chainring weight — approximately 53 g
• Chainring mount — four-bolt 104 mm bolt circle diameter (BCD)
• Chainring outside diameter — 144.2 mm
• Colour — black

Benefits

1. Gain a little pedal clearance through ruts and over roots. Compared with 170 mm arms, 165 mm arms keep the pedals closer to the crank centre.
2. Use a lower gear on climbs. In the same rear gear, a 34T ring moves the bike less distance per pedal turn than a 36T ring.
3. Choose the crank length and gearing separately. Use 165 mm for the pedal circle you want and 34T for the terrain you ride.

Common Questions

• Q: Will 165 mm arms change my gears if I already use a 34T ring?
  A: Your gear ratios stay the same if you keep the same tooth counts. The shorter arms change the size of the pedal circle and how pedalling feels.
• Q: How do I check whether this crankset fits my bike?
  A: Check for a compatible square-taper bottom bracket and a suitable chainline. Allow room for the 144.2 mm ring and chain beside the drive-side chainstay. Check that both arms clear the frame through a full turn.
• Q: What does 104 BCD mean?
  A: It is the diameter of the circle through the centres of the four chainring bolts. Use the 144.2 mm outside diameter to check space around the ring.
• Q: Is 34T suitable for steep climbs?
  A: Check the size of your largest rear sprocket. If you already use your lowest gear on steep climbs, compare your current front ring and cassette before choosing 34T.

Summary

Choose this 165 mm crankset if you want a smaller pedal circle and 34T gearing for mixed terrain. Before ordering, check your bottom bracket interface, chainline and frame clearance with the chain fitted.