• B52 Technology
• ABS Plastic Sleeve
• BB30 or PF30 Compatible
• Outboard Bearings
• Enduro™ Bearings
• Oversized™ 35mm
• Oversized Technology™
• Compatibility: Box One™ M35 only
• Shell: PF30 or BB30 only
• Spindle Type: Box/Praxis™ M35 only
• Weight: 138 grams / 4.9 ounces

**It does NOT include a drive-side bottom bracket seal.