Left-hand clamping screw for Shimano -road and MTB – Y1GS22000

The Shimano Y1GS22000 left-hand crank clamping screw is a genuine spare part designed to secure the left-hand crank on many Shimano cranksets fitted with the Hollowtech II system.

Listed by Shimano as a ‘Crank fixing screw with washer’, this fixing screw is supplied with its washer and has a size of M6 × 19 mm. It provides a practical solution for replacing a damaged screw, one with a worn head or one whose thread shows signs of wear.

The Y1GS22000 is used in particular on various Shimano road and MTB crankset configurations. It is tightened using a 5 mm Allen key.

Key features of the Shimano Y1GS22000

• Genuine Shimano spare part.
• Screw designed for the left crank arm of compatible cranksets.
• Compatible with many Hollowtech II configurations.
• Washer supplied with the bolt.
• Dimensions: M6 × 19 mm as per the documentation Shimano
• Tighten using a 5 mm Allen key.
• Sold individually.
• Ideal for replacing a screw with a damaged head or thread.
• Suitable for certain Shimano road and mountain bike models with 10, 11 and 12-speed systems.

What is the Shimano Y1GS22000 left-hand crank screw used for?

On a compatible Shimano Hollowtech II crankset, the screw on the left-hand crank helps to secure the crank correctly to the bottom bracket spindle.

This small part therefore plays an important role in the crankset’s assembly. A screw with a damaged head can make disassembly difficult, whilst a screw or thread in poor condition can compromise the quality of the assembly.

The Y1GS22000 is designed to replace the original screw when it is worn or damaged, provided the part number matches the relevant crankset.

A part suitable for the following cranksets Shimano Hollowtech II

Part number Y1GS22000 appears in the Shimano parts lists for several cranksets. Shimano identifies it, in particular, on the GRX FC-RX820 as a crank arm fixing bolt with washer, in the M6 × 19 size. It is also listed for GRX FC-RX810 configurations.

This makes it a common part for the maintenance of certain Shimano cranksets fitted with a left-hand crank arm using this fastening system.

Technical specifications