SIDI Hyper Extension Block System 2025 R18B 85 ID x 120 OD

85 ID x 120 OD x 18 mm

High power

Hook and loop wrist strap and cuff closure

BMW FINAL DRIVE GEAR OIL C-SAF-XO 75W-90

SIDI Hyper Extension Block System 2025 R18B 85 ID x 120 ODSPECS Fits Crossfire 3 SRS models Advanced hyperextension prevention technology Provides safety without limiting flexibility Comes with installation screws and attachments DESCRIPTION The Sidi Hyper Extension Block System is a vital replacement part for Crossfire 3 SRS boots, designed to prevent hyperextension of the ankle, instep, and posterior tendon during intense rides. Featuring a two piece construction, this system enhances protection without