48T Crankset with 170 mm Square Taper Arms and Motsuv Narrow-Wide Chainring 104 BCD Black

Taller gearing for long stretches on the flat

This 48T crankset pairs 170 mm square-taper arms with a Motsuv narrow-wide chainring. It suits riders who regularly spin out on a 44T setup along flat roads or sealed cycleways. The larger ring lets you cover more ground per pedal turn while keeping a familiar crank length.

With the same cassette, 48T gives about 9.1% more distance per pedal turn than 44T. That difference applies in every gear, including your lowest. If your usual route has steep climbs or frequent loaded starts, check whether the taller gearing suits you.

Key Features

• The 48-tooth front ring gives taller gearing than 44T with the same rear cassette.
• Alternating narrow and wide teeth help keep a compatible chain seated on the ring.
• The 170 mm crank arms retain the same pedal circle when replacing another pair of that length.
• The four-bolt 104 mm BCD mount lets you replace the chainring separately when it wears.

Specifications

• Crank arm length — 170 mm
• Bottom bracket interface — square taper
• Crank arm material — aluminium alloy
• Chainring — Motsuv MOTSUVCR48T-B with 48 narrow-wide teeth
• Chainring mount — four-bolt 104 mm bolt circle diameter (BCD)
• Chainring outside diameter — 201.6 mm
• Chainring material — aluminium alloy
• Chainring weight — 95 g ±5%
• Colour — black

Benefits

1. Pedal at a lower cadence on long flat sections. At the same speed and in the same rear gear, 48T needs fewer pedal turns than 44T.
2. Keep the crank length that fits you. If you already ride comfortably on 170 mm arms, you can change your gearing and keep the same pedal circle.
3. Check the space you need before ordering. The 201.6 mm ring is 16.3 mm larger across than the 185.3 mm 44T version. At the same chainline, its teeth extend about 8.2 mm farther from the crank centre.

Common Questions

• Q: When should I choose 48T over 44T?
  A: Choose 48T if you often spin out on 44T and mostly ride flat routes. Choose 44T if you want a lower gear for starts and climbs with the same cassette.
• Q: Why pair 170 mm arms with a 48T chainring?
  A: Choose 170 mm if that arm length suits your fit. The arms set the size of your pedal circle. The 48T ring and rear sprocket together set the gear ratio.
• Q: How do I check clearance for the 201.6 mm chainring?
  A: Check for a compatible square-taper bottom bracket and suitable chainline. Allow room for the ring and chain beside the drive-side chainstay. Check that both crank arms clear the frame through a full turn.
• Q: Will I need to change my chain length?
  A: If you are moving up from a smaller ring, check the chain length with the new ring and your largest rear sprocket. You may need a longer chain.

Summary

Choose this 48T crankset if 170 mm arms suit your fit and you want taller gearing for predominantly flat rides. Check the chainline and frame clearance for the 201.6 mm ring with the chain fitted.