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Product Overview: This 170mm(6.69in) left bike crank arm is designed as a replacement part for bicycle crankset repair. Made from aluminum alloy, it offers a lightweight structure for daily riding, commuting, road cycling, and mountain bike maintenance.
Practical Repair Part: Suitable for replacing a worn, damaged, or aging left crank arm on compatible bicycles. It can be used for mountain bikes, road bikes, and other bikes using the matching 12 spline hollow crankset system.
Installation Reminder: Package includes 1 bicycle left crank arm only. When installing the pedal, align the pedal thread carefully at the first turn and tighten it fully in place. Incorrect alignment or loose installation may cause loosening during riding or thread damage.
Accurate Size Details: Hole center distance is approx. 170mm(6.69in), overall length is approx. 220mm(8.66in), crank head width is approx. 44mm(1.73in), and pedal end width is approx. 22mm(0.87in). Designed for the left side only, with a black finish for a clean bike appearance.
Compatible Design: Built for Prowheel 12 spline hollow crankset systems. Please check your crank interface, side, and size before purchase. This item is a compatible replacement part and is not an original for Prowheel component.
Item Type: Bicycle Left Crank Arm Replacement
Material: Aluminum Alloy
Color: Black
Overall Length: Approx. 220mm(8.66in)
Hole Center Distance: Approx. 170mm(6.69in)
Crank Head Width: Approx. 44mm(1.73in)
Pedal End Width: Approx. 22mm(0.87in)
Raised Inner Diameter: Approx. 21.4mm(0.84in)
Side: Left Side
Compatible Type: For Prowheel 12 Spline Hollow Crankset
Application: Left Crank Arm Repair / Bike Crank Replacement / Bicycle Maintenance
Suitable Bike Types: Compatible Mountain Bike / Road Bike / Bicycle Crankset System
Package List:
1 x Bicycle Left Crank Arm
Note:
1.When installing the pedal, align the pedal thread correctly at the first installation and tighten it fully in place. Incorrect thread alignment or loose installation may cause the crank arm to loosen after riding and may lead to thread damage.
2.This product is a compatible repair part, not an original Prowheel part. The listing price is for one left crank arm only. One bicycle usually needs only one left crank arm.
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