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*FREE SHIPPING ON ACCESSORY ORDERS OVER $49.99 - FREE SHIPPING ON BIKES OVER $1,000 -Huge Bike Savings Now!
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Cervelo R5 SRAM Force eTap AXS - ZIPP 303S - Lime/Black 2023

by Cervelo
Save 14% Save 14%
Original price $9,300.00
Original price $9,300.00 - Original price $9,300.00
Original price $9,300.00
Current price $7,999.99
$7,999.99 - $7,999.99
Current price $7,999.99
Size: 48CM

Please see photos for detailed specifications.

For additional information, photos or wheel and component upgrades available, please email colleyville@playtri.com or call us at (817) 251-0612

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Why Buy a Bike from Playtri 

*Specifications subject to change without notice from manufacturers

WHAT GOES UP MUST COME DOWN

R5 has one job—get to the top, fast. But for all the glory and fanfare that comes with a summit finish, they’re rarely the only climb of the day. And while a race isn’t usually won on a descent, they can certainly be lost. A climbing bike that can’t carve a hairpin is a bit like a cup of decaf coffee. This is the fourth iteration of the R5, and while weight and stiffness have varied over the years, the handling, poise, and unmatched prowess on a descent have been consistent since day one.

FASTER IN EVERY DIRECTION

The new R5 frame is 130g lighter than the previous model—a 16% reduction from an already-light frame.  And while aerodynamics weren’t a focus with this frame the way they would be on an S5 or P5, bringing the cables inside reduced drag by 25g.

AERODYNAMICS

Aerodynamics is at the very core of what we do at Cervélo. The company was founded with the goal of making cyclists faster, and using aerodynamics is the best way to achieve that goal. We take a system approach to aerodynamics, considering the bike, rider, and all components together. A bike never rides itself, and so we don’t design or test our bikes without a rider. It means that our bikes are not just fast in the wind tunnel, but fast out on the road with you as well.

Aerodynamic drag is the major factor affecting a bike and rider - it can account for up to 90% of the overall resistance that a rider must overcome. There are several types of drag relevant for us. First, pressure drag. As a body (in this case a bike and rider) passes through the air, it forces the air molecules to move out of the way in order to pass through them. These molecules push back on the body, creating pressure. The component of this pressure that faces aft (to the rear of the body) is called pressure drag.

Secondly, there is friction drag. Air, like all fluids, has viscosity (or "thickness"). The air molecules that come into contact with the body stick to its surface and stay stationary in relation to the body. As the body continues through the air, other air molecules pass by the stuck molecules as they flow around the body in layers, following parallel paths. This is the laminar boundary layer. The viscous nature of air creates a shear force, or friction drag.

At some point on nearly all bodies, laminar flow cannot be maintained and the air molecules tumble and mix instead of flowing smoothly. The transition point is where this turbulent boundary layer begins. This behaviour of flow is related to a parameter called the Reynolds number, which is determined by several physical characteristics of the flow. The laminar flow regime exists up to Reynolds numbers of around 10,000. Beyond Reynolds numbers of 10,000, the flow transitions to “turbulent” flow, as shown in the figure below.

Due to its mass, moving air has inertia and therefore cannot easily follow high-curvature surfaces. Under these conditions air separates from the body, creating low-pressure regions that "pull" on the surface, contributing to more drag. If the trailing edge of the body fails to guide the air neatly back together again, there is a “stalled flow” — a region of recirculating air that has low pressure. This low pressure again pulls on the surface, adding still more drag.

In designing our bikes and components to minimize aerodynamic drag, there are two different parameters we can affect. The first is the drag coefficient, which is a factor based on the shape of a body and how the air flows around it. Different shapes have different effects on drag. For example, a circular shape has roughly 24 times the drag of our TrueAeroTM tube shape. The orientation of the tube shapes to the airflow also affects its drag: the seat post and down tubes, for example, are presented at an angle, meaning the air hits a shape that’s closer to an ellipse, changing the drag coefficient.

The other parameter we can control is the frontal area. This is intuitive: the larger the area, the bigger the drag. Our engineers take this into account: for example, our time trial, triathlon and aero road bikes are designed so that the rider and bike (as an integrated system) present the smallest frontal area possible, for maximum aerodynamic advantage.

The drag coefficient, CD, and the frontal area, A, are related to the total drag a body sees by the following equation:

The other parameters in this equation are the velocity of the body through the air, V, and the density of the air, ρ (Rho). This is also the reason that many bicycle speed records attempts are made at high altitude, since the lower air density has a direct reduction on drag.

These aerodynamic forces are the largest source of drag on a bike and rider, up to 90% of the total resistance that they see. This means that designing our bikes and components to minimize drag, by minimizing both CD and A, is an efficient means of making the rider faster. However, minimizing the drag on the rider, through body position, component design or other means, is also important and so a systems approach is needed to ensure the fastest overall result. A bike never rides itself, and so we don’t design or test our bikes without a rider for this reason.

Color Lime/Black
Fork Cervélo All-Carbon, Tapered R5 Fork
Headset FSA IS2 1-1/4 x 1-1/2
Seatpost Cervelo SP24 Seatpost
Shifters SRAM Force eTap AXS HRD 12 spd
Rear Derailleur SRAM Force eTap AXS 12 spd
Front Derailleur SRAM Force eTap AXS 12 spd
Brake Calipers SRAM Force HRD
Brake Rotors SRAM Paceline 160mm
Thru Axles Cervelo Aero Thru-Axles, 12x100/142, Removable Handle
Crankset SRAM Force AXS 48/35 with Power Meter
Bottom Bracket SRAM Dub
Handlebar Cervélo HB13 Carbon
Stem Cervélo ST31 Carbon
Saddle Fizik Argo
Cassette SRAM Force 12s XG1270, 10-33
Chain SRAM Force, 12 spd
Wheels Zipp 303S
Tires Pirelli Cinturato Velo