Item: Pair of Shimano Exage 500LX crank arms intended for a triple mountain bike crankset.

Model/Series: Shimano Exage 500LX FC-M500 crankset with matching 170 mm right and left arms.

Part type: Square taper crankset arms without chainrings, designed to mount on a square taper bottom bracket spindle.

Materials and color: Forged aluminum alloy construction with a silver anodized finish.

Design details: Right arm features a five-arm spider with integrated threaded bosses for a triple chainring setup, while the left arm is a straight matching crank; both use square taper spindle bores, standard pedal threads at the ends, and a low-profile arm shape suited to mountain bike use.

Features: Compatible with square taper JIS bottom brackets, supports triple front chainrings for a wide gearing range, 170 mm arm length for balanced leverage and ground clearance, and period-correct styling for restoring vintage Shimano-equipped mountain bikes.

Markings and logos: Front of the right arm carries an "EXAGE 500LX" logo decal, and the back of the arms are stamped "SHIMANO FC-M500 VIA JAPAN 170" and "SHIMANO VIA JAPAN 170" along with additional production codes.

Actual Measurements: Digital scale display shows an actual combined weight of 13.5 oz for the two crank arms together as pictured.

Compatibility: Intended for use on vintage mountain bikes originally spec'd with Shimano Exage 500LX or similar square taper triple cranksets; riders and mechanics should confirm bottom bracket spindle type, length, and chainline requirements for their specific frame and drivetrain before installation.

Includes: One Shimano Exage 500LX FC-M500 right crank arm with triple spider and one matching left 170 mm crank arm only; no chainrings, chainring bolts, crank bolts, dust caps, bottom bracket, pedals, or additional mounting hardware are included.