The HollowGram R45 wheelset from Cannondale is the stable companion of the KNOT 45 SL and has been developed to meet the demands of today’s cyclists by unlocking the speed and performance potential that a high-caliber wheelset can offer, while providing exceptional versatility and excellent value for money.

Utilizing their expertise in aerodynamics the 45mm deep rim profile, designed by Nathan Barry - the man responsible for the SystemSix aero bike - has been optimized to provide speed across every type of terrain along with aerodynamic efficiency and crosswind stability. Indeed, the R 45 wheels share the same high grade rim with the Hollowgram KNOT 45 SL

Combined with the tubeless ready 21mm internal width, the R45 rim is the perfect match for use with modern, wider tires allowing the use of lower pressures to reduce rolling resistance and provide a more compliant ride. The rim offers outstanding sidewall support and creates a tire profile that offers confident and predictable handling in all conditions.

The R45 reduces costs through a hub and spoke change. Rather than the DT 240 hub internals, the R45 use a traditional 3-pawl hub design and a more cost effective spoke. The result is a marginally slower pick-up and the addition of 140g to the weight of the pair. Trifling when you consider they are 50% cheaper than their race-bred brethren.

Their robust build and wallet friendly price tag make the R45s an excellent first wheel upgrade proposition or may even come onto your radar for gravel and adventure builds - particularly when you factor in the product support....

Technical Information :

45mm rim depth provides best combination of speed, aerodynamics, stability and weight

32mm outer rim width optimises airflow of a wider tire allowing it to cleanly reattach to the rim and reduce drag

21 internal width is perfect for use with modern, wider tires, providing them with the right amount of sidewall support to facilitate surefooted handling in all conditions.

21 points of hub engagement with 3 sprung loaded pawls offer fast engagement and efficient power transfer

Easily set up to access benefits of a tubeless system

Compatible with XDR cassettes using replacement freehub body (K81010)

1680g weight (pair)