The Importance of the Yaw Angle and Its Distribution
Today we are going to talk about a topic that is often discussed: yaw angle in aerodynamics. Althoug...
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XC redefined
Cross-country bikes are built for speed, efficiency, and low weight – but the Silva takes it one step further. It blends the agility of an XC bike with the control of a trail bike, setting a new benchmark for all-terrain performance. Light, fast, and with a progressive geometry, it delivers unmatched climbing efficiency and superior downhill control. The Silva is made for those who refuse to compromise. Whether you're racing, tackling technical trails, or pushing hard on after-work rides, this bike delivers in every situation. Designed with decades of experience. Assembled in Germany.
Progessive
Geo
Geo
Highly
Engineered
Engineered
Slider
Suspension
Suspension
More control, more speed
In mountain biking, stability is the key to true speed. The more confidence your bike gives you, the harder you can push it – and that’s exactly where the Silva excels. Its progressive geometry, featuring a slack head angle, long reach, and steep seat tube, maximizes control on descents without sacrificing climbing efficiency. Studies show that geometry has a far greater impact on downhill performance than weight or tire choice – which is why we made it our priority. Suspension setup is just as crucial. The innovative Slider Suspension keeps the rear end lighter, more compact, and highly responsive, with optimal leverage. Combined with perfectly tuned suspension components and cutting-edge Shimano brakes, the Silva sets new standards for efficiency and control. The result? More speed, more flow, more fun – whether you're racing or shredding your local trails.
Geometry
More important than all the technical details on the Silva is the geometry. The numbers would not be out of place on an enduro bike: A 65° head tube angle, 465 mm reach (size M) and 76° seat angle. Why did we go that way? Because various studies showed that after eliminating differences in tires and weight, the bike makes a much bigger difference in downhills than in climbs. Our geometry is just as good as others on the way up, but when things get hairy, it becomes an almost unfair advantage.
Slider Suspension
We use a slider instead of a linkage on the Silva for multiple benefits: It is lighter, it is compact, and it creates the best leverage curve we can think of. For best function, we source the best components and assemble them at our own facility in Germany.
Lightweight Design
An optimized design is the necessary base for such a lightweight product. We did a lot of iterations in FEA to find the optimal shape that reduces surface area while retaining stiffness.
Layup Optimization
Countless iterations of virtual layups went into the development of the Silva, something impossible to do relying on physical prototypes. We made sure that every fiber has its function.
Optimized Assembly Parts
We checked each aluminum part for possible weight savings. Compared to our starting point, we saved 40 g, which at this level is a massive improvement.
Integrated Chainguide
We integrated a minimalist, lightweight chainguide into the design.
Spec Highlights
The performance of a mountainbike cannot be measured in Watts or grams alone. Handling is the most important aspect. Key components besides frame geometry are tires, grips, suspension and brakes. When tested against other tires, the Wolfpack tires were consistently fastest, with an average advantage of 40 seconds over the typical XC race duration of 75 minutes. We are only using the best suspension components, tuned to match our kinematics, and the latest Shimano brakes, which are the current benchmark. And in terms of Watts, nothing matters more in mountainbiking than drivetrain efficiency, where the CeramicSpeed Ufo chain comes to full effect in those steep, slow climbs.
Technical Information
- Avona Silva Manual [PDF]
- Maximum system weight: 110 kg
- Cranks: Max. 38T with 55 mm chain line
- Rear Hub: 12 x 148 mm
- Rear brake: Postmount 180 mm
- Cable routing: Internal, compatible with mechanical/Di2/AXS shifting
- Derailleur hanger: UDH
- BB: BSA 73 mm
- Seatpost: 31.6 mm
- Headset: IS52/IS52, bearing seat depth 8.3 mm
- Bottle cages: 1 on seat tube, 1 on down tube
- Tire clearance: up to 29x2.4
FAQ's
Why only two frame sizes for the Silva?
We were surprised by this ourselves, but we learnt that we can comfortable fit riders from 160 -190 cm with these two geometries. Doing an even smaller size seems like a waste of ressources, and our L is already longer than most XLs on the market.
What is the maximum tire size for the Silva?
29x2.4”
What cranks fit the Silva?
All Shimano and Sram MTB cranks with chainrings up to 38 T and 55 mm chainline.
Is the Silva compatible with mechanical drive trains?
Yes, you can use mechanical rear derailleurs
Find a dealer
Avona bikes are assembled to order in Germany and sold through specialised dealers. Find a dealer near you or contact us at info@avona.cc
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