Reduction sleeve (seatpost adapter)

Reduction sleeve with a seatpost adapter. Available sizes:

• 25.4/26.4MM
• 25.4/26.6MM
• 25.4/26.8MM
• 25.4/27.0MM
• 27.2/28.6MM
• 27.2/29.2MM
• 27.2/29.8MM
• 27.2/30.0MM
• 27.2/30.2MM
• 27.2/31.4MM
• 27.2/31.6MM
• 27.2/31.8MM