Gold (HH): superhigh friction, high heat (longer lasting) sintered bronze metallic compound with diamond ground surface for wet/extreme conditions (due to high heat generation, HHGold compound is not for Hydraulic/DH race use unless OE specified)\n Red (R): high friction, low heat (faster wearing) aramid based, semimetallic soft compound for DH racing\n Green: medhigh friction (medium wearing) aramid based, organic compound for XC/allpurpose (no squeal)
- model:
- Hollowtech II
- description:
- Shimano Hollowtech II pre-tension bolt
- bolt size:
- 8mm
- color:
- Burgtec bullion gold