For 1994 the venerable Shimano Skylark design was finally made SIS compatible. It was also made one further step cheaper. This example is made in China and uses noticeably thin steel and equally noticeably cheap plating.

This example is a long cage version.

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1. •Brand: Shimano
   

2. •My category: Shimano - from Skylark to world domination
   

3. •Country: Japan, manufactured in China
   

4. •Date of introduction: 1994
   

5. •Date of this example: 2000 (two letter code YK)
   

6. •Model no: TY15 GS
   

7. •Weight: 327g including hanger plate
   

8. •Maximum cog: 28 teeth
   

9. •Total capacity: 34 teeth
   

10. •Pulley centre to centre: 75mm
    

11. •Index compatibility: 5 speed
    

12. •Chain width: 3/32”
    

13. •Logic: top normal
    

14. •Pivots: two sprung pivots
    

15. •Material: steel
    

(0225/G) 0227/H