170mm Aluminum Single Crank Arm CNC 130mm BCD Lightweight for MTB Road Brompton
$32.12
• 170mm Crank Arm – Ideal length for pedaling balance and leverage.
• CNC Machined Aluminum – Lightweight yet durable construction.
• 130mm BCD Compatibility – Works with standard 130mm bolt circle chainrings.
• Universal Fit – Suitable for MTB, road and Brompton folding bikes.
• Square Taper Design – Fits square taper bottom bracket systems.
- Description
- Additional information
- Reviews (0)
Description
Product Overview
This 170mm aluminum single bike crank arm is precisely CNC machined and designed with a 130mm BCD interface for single chainring setups. The lightweight alloy construction provides excellent strength and durability while keeping weight low, making it a great upgrade or replacement part for mountain bikes, road bicycles and folding bikes like Brompton.
Technical Specifications
-
Crank Arm Length: 170mm
-
Bolt Circle Diameter: 130mm BCD
-
Material: CNC Machined Aluminum Alloy
-
Design: Single Crank Arm
-
Compatibility: MTB / Road / Folding / Brompton Bikes
-
Drivetrain Type: Single Speed
-
Bottom Bracket: Square Taper
-
Color: Black / Silver (may vary)
Package Includes
-
1 × Aluminum Single Crank Arm (170mm)
-
1 × Chainring Mounting Hardware Set (if included)
How To Use
-
Remove the existing crank arm from the square taper bottom bracket.
-
Slide the new 170mm crank arm onto the bottom bracket spindle.
-
Ensure the crank arm is aligned correctly.
-
Tighten the fixing bolt to recommended torque specs.
-
Attach your chosen 130mm BCD chainring and secure it.
-
Test smooth rotation before riding.
Additional information
| Weight | N/A |
|---|---|
| Color | Black, Sliver |
Related Products
-
Brake Calipers, Brakes, Components
Bicycle Disc Brake Adapter Converter Aluminum Alloy Rim to Disc Brake
$13.65 - $16.860 - 0 reviewsThere is no AI review summary.Select options This product has multiple variants. The options may be chosen on the product pageQuick View -
Components, Saddles, Saddles & Posts
Honeycomb Silicone Bicycle Saddle Cover Non-Slip for Gravel Road Bike Comfortable for Cycling
$10.41 - $11.210 - 0 reviewsThere is no AI review summary.Select options This product has multiple variants. The options may be chosen on the product pageQuick View -
Components, Grips, Parts & Stem
Non-Slip Soft with TPE Rubber Bicycle Bar Grip for Kid’s Bike Balance Bike
$2.310 - 0 reviewsThere is no AI review summary.Select options This product has multiple variants. The options may be chosen on the product pageQuick View -
Cleats, Components, Pedals & Cleats
Road Bike Pedal Cleats For Shimano SPD‑SL SM‑SH11 Compatible
$4.56 - $8.370 - 0 reviewsThere is no AI review summary.Select options This product has multiple variants. The options may be chosen on the product pageQuick View -
Components, Grips, Parts & Stem
Rubber Plastic 120mm Length Ergonomic Design Bike Handlebar Grips
$2.300 - 0 reviewsThere is no AI review summary.
- Description
- Reviews (0)
Description
Product Overview
This 170mm aluminum single bike crank arm is precisely CNC machined and designed with a 130mm BCD interface for single chainring setups. The lightweight alloy construction provides excellent strength and durability while keeping weight low, making it a great upgrade or replacement part for mountain bikes, road bicycles and folding bikes like Brompton.
Technical Specifications
-
Crank Arm Length: 170mm
-
Bolt Circle Diameter: 130mm BCD
-
Material: CNC Machined Aluminum Alloy
-
Design: Single Crank Arm
-
Compatibility: MTB / Road / Folding / Brompton Bikes
-
Drivetrain Type: Single Speed
-
Bottom Bracket: Square Taper
-
Color: Black / Silver (may vary)
Package Includes
-
1 × Aluminum Single Crank Arm (170mm)
-
1 × Chainring Mounting Hardware Set (if included)
How To Use
-
Remove the existing crank arm from the square taper bottom bracket.
-
Slide the new 170mm crank arm onto the bottom bracket spindle.
-
Ensure the crank arm is aligned correctly.
-
Tighten the fixing bolt to recommended torque specs.
-
Attach your chosen 130mm BCD chainring and secure it.
-
Test smooth rotation before riding.
Related Products
-
Brake Rotors, Components
Bicycle Centerlock Disc Brake Rotor with Lockring 160mm/180mm/203mm
$10.28 - $16.210 - 0 reviewsThere is no AI review summary.Select options This product has multiple variants. The options may be chosen on the product pageQuick View -
Components, Saddles, Saddles & Posts
Front Mounted Child Bike Seat for Kids Up to 30kg Adjustable
$18.790 - 0 reviewsThere is no AI review summary. -
Components, Saddles, Saddles & Posts
Honeycomb Silicone Bicycle Saddle Cover Non-Slip for Gravel Road Bike Comfortable for Cycling
$10.41 - $11.210 - 0 reviewsThere is no AI review summary.Select options This product has multiple variants. The options may be chosen on the product pageQuick View -
Components, Saddles, Saddles & Posts
Kids Balance Bike Saddle Replacement Compatible with 22.2mm Diameter Seatpost
$12.000 - 0 reviewsThere is no AI review summary. -
Components, Parts & Stem, Headsets
Profession Bicycle Headset for 1-1/8″-1-1/2″ Tapered Tube for Road/TT/MTB Bicycle
$14.860 - 0 reviewsThere is no AI review summary. -
Components, Grips, Parts & Stem
Rubber Plastic 120mm Length Ergonomic Design Bike Handlebar Grips
$2.300 - 0 reviewsThere is no AI review summary.






































