C25i Wheelset 28"/28" - SpeedTorque XDR ( Standard )

1. Easy installation of tubeless tires due to a self-sealing internal rim contour without time consuming tricks and the need of an air ­compressor
2. Sophisticated rim flange with 30 % stronger impact absorption
3. Almost 100 % identical spoke angles in the front wheel and almost identical spoke angles in the EVO3 rear wheel for an improved durability and higher steering precision
4. Self-retaining Q-Lock spoke nipples lead to more mileage and reduced service requirements
5. The entire wheel is built with one single spoke length
6. 24 cone-shaped, 3D-oriented inmold spoke nipple sockets
7. Save Tubeless – rim flanges that prevent sudden depressurization when ridden with low air pressures
8. The symmetrical rim geometry allows for Standard and EVO3 to be built with identical spoke lengths on both sides.

Energy saving carbon fiber rims did always come with compromises in the past. They have been expensive and either not particularly durable or not particularly lightweight, if they were at all.

Thanks to tireless designing, special tool con­structions and a new carbon fiber layup, we succeeded in combining the advantages of the material. The Syntace C-Series carbon fiber rim stands more impact than any Aluminum competitor we know of and remains – despite the inner width of 25 mm – extra­ordinarily lightweight (418 g for the 28” rim). The unbeatable price is the result of the ­all-new high-class Syntace 
production procedure.

There is no such thing as con­stant speed when riding a bike. With a single pedal revolution already, you generate two tor­que peaks and thus two acceleration moments. At a cadence of 60 revolutions per minute, this equals 120 small accelerations per minute without even hitting an obstacle on the trail that slows down the bike further. This physical force (MOI – Moment of Intertia) is measured in kg·cm2. The higher this number, the more the wheel tries to slow down the acceleration. 

This is because it reflects how far the weight of the overall design is placed away from the hub and thus how much it slows you down.

Comparison with an the ­identical overall weight:

1. Low inertia – the weight is ­close to the hub and does not constantly have to be accelerated.
2. High inertia – the weight is ­closer to the rim and thus leads to a higher effort.