Skip to product information
1 of 1


Colnago V4Rs Shimano Ultegra

Colnago V4Rs Shimano Ultegra

Regular price $17,999.00 CAD
Regular price $7,500.00 CAD Sale price $17,999.00 CAD
Sale Sold out


V4Rs Design

This frameset is stiffer than the V3Rs. You can sprint faster and climb with more efficiency. We developed a new testing methodology to simulate and measure stiffness in a realistic and effective way.

The V4Rs profiles have been revised to allow a decrease in aero drag. The Colnago V4Rs, albeit not an aerobike, is a significant leap forward compared to the V3Rs, based on its wind tunnel performances.

The T47 Bottom Bracket - same dimension as of the C68 - is oversize, to allow a better reactiveness of the bike and easier replacement compared to the previous Colnago standard.

Accurate Measuring

We created internal methodologies to replicate the loading forces of standing-on-pedals and seated positions, and check the overall frame deformation and stiffness. We were able then to define what we call RDS (Real-Dynamic Stiffness), and characterize them in combined multi-load conditions.

Seated Position

In the seated position, loads are applied only on the same plane of the front triangle to replicate all-round riding: Taking the V3Rs as reference value, the V4Rs results as 5% stiffer in this occasion.

Sprint Position

In the sprint position there is a combination of loads applied both on the handlebar and on the bottom bracket, with both component laying on the front triangle plane and normal to the frame plane, aimed to simulate the flexural and torsional stresses at oscillating cambers. Having the V3Rs as reference value, the V4Rs results as 4% stiffer in this particular position.


The new V4Rs significantly improves the crash worth of the most exposed parts which may be subjected to impact in racing conditions. An example is given by the completely new designed seat stays, which, besides their more aerodynamic shape, also significantly improve the flexural and impact resistance. The robustness of this design also minimizes the need of maintenance.


The weight distribution has changed from the V3Rs. The front fork is now lighter and the overall weight of the frame kit + handlebar setup has been decreased of 56 grams.The result is a better handling in corners and more safety and precision when going downhill.


Geometry has been revised to have even more balanced performance in all the different sizes with respect to the V3Rs. For the V4Rs the relationship between seat tube length and reach is almost linear, the stack / reach ratio has been optimized and harmonized among all the sizes, and the chain stay length has been reduced. This geometry affords a better balance, power transfer and the same race feeling for all the sizes.

View full details