A CHASSIS ARCHITECTURE WORTHY OF THE APRILIA TRADITION
The performance provided by the new engine is perfectly matched to an ultra-fine chassis architecture, easy to ride and intuitive, but at the same time incredibly high performance that, in the best Aprilia tradition, is simply unrivalled in the category. In fact, the mixed steel trellis/aluminium plates frame provides standard-setting stiffness, defines an extremely compact bike and ensures that it is capable of catering to fledgling riders with no problem, as well as enhancing the riding skills of more expert and discerning bikers. This makes flowing routes a favorite playground for the Shiver 900.
The structure of Shiver 900 draws from all the proverbial Aprilia chassis architecture know-how, as well as their experience on tracks all over the world. The trellis upper part in steel tubing is connected to wide spread aluminium lateral plates using special, high-resistance bolts. The combination formed by these elements forms an extremely stiff and lightweight frame, an rational and excellent solution for reining in all the horses of the new Aprilia V90.
The contained longitudinal development of the engine has led to obtaining an agile bike, a feature that also benefits from the choice to position the shock absorber laterally. Thanks to this solution, space was created for the exhaust manifolds that have a shape and volume calibrated to perfection in order to get the best performance from the engine. This has allowed for an optimum exhaust manifold layout, without having a significant impact on the length of the bike and without thermally stressing a fundamental riding element like the shock absorber. The aluminium alloy swingarm with stiffening truss boasts stiffness values at the top of its category and it is sized to withstand the asymmetrical stress due to the lateral positioning of the shock absorber.
Aprilia Shiver 900 adopts a new Kayaba fork, with hydraulics adjustable in extension and spring preload, almost a half kilo lighter than the one mounted on the first version, with 41 mm stanchions with chill cast feet to support the radial callipers. The 130 mm travel lets you smoothly tackle urban and mountain routes. The two steering yoke plates are made of forged aluminium.
The rear shock absorber, mounted on the side, is pivoted directly to the swingarm, following the cantilever layout and it is adjustable in spring preload and hydraulic rebound. Rear wheel travel is 130 mm.
The sporty, three-spoked wheel rims are also new, inspired by the standard Aprilia Tuono V4 wheels and contributors to containing the weight, reducing the front by 0.9 kg and the rear by 1.3 kg. This leads to a drastic reduction of the gyroscopic effect and therefore greater agility for the bike, improved suspension functionality thanks to the reduction of unsprung masses and quicker acceleration. The new wheel rims are shod with 120/70 tyres on the front and 180/55 on the rear.
The braking system, equipped with two-channel ABS, implements radial callipers to highlight the sportiness of the project and 320 mm discs on the front. On the rear, a 240 mm disc is gripped by a single-piston calliper.
Both the front and rear systems have metal braided brake lines derived from the aeronautic sector, which eliminate the annoying buffering effect of conventional lines and guarantee maximum braking precision.