Presenting the Crankbrothers Synthesis XCT alloy rim. XC and trail riders worldwide have been amazed by this rim sending out the message that carbon isn't everything. Lightweight, durable and race-ready design makes the Synthesis XCT a great rim for any rider and a god-sent those needing a rim replacement. 

Features:

• Rims sold individually not in sets.
• Tuned Front and Rear Alloy Wheel System for XC riding and racing.
• Front and rear-specific wheels tuned and optimized to address the specific performance requirements and loads of mountain bike riding.
• Compliant tuned front wheel improves handling and maximizes grip and control in turns. Wider inner rim width supports wider tire profile in front, increased volume and contact patch, and rounds tire profile to enhance turning.
• Stiff tuned rear wheel supports peak loads and enhances stability and tracking at speed. Narrower inner rim width supports a narrower tire profile in the rear, improves rolling resistance, and sharpens tire edge for grip.
• Welded and sleeved rim joint for additional strength. 

Specs:

• ERD 599mm
• ETRTO (27.5) 585mm
• ETRTO (29) 622mm
• hub Synthesis Standard
• inner rim width front 31.5mm
• inner rim width rear 24.5mm
• outer rim width front 37.5mm
• outer rim width rear 36.5mm
• rim height 18mm
• Rim Material 6013 T6 Alloy
• spoke count front 28
• spoke count rear 32
• warranty 2 Years (rim only)
• Weight Per Rim (29F) 513g
• Weight Per Rim (29R) 510g