Adding to an already vast line of road wheels, the Fulcrum Racing Quattro family is expanding. Named for the Italian word for four, the Quattro line revolves around a 40mm rim profile (35mm in aluminum) which Fulcrum praises for its versatility. Still light enough for climbing yet deep enough for aero benefits in many situations, the Quattro appears to be an excellent all around wheelset made better by increased options.
First introduced in the 35mm aluminum Quattro, two full carbon rims are added to the family including one that’s disc brake specific. More than that, all three wheels feature a revised rim shape with a wider profile for increased stiffness and comfort from the use of wider tires. Time to get #fulcrumfast with the new rim or disc brake Quattros…
Now a family of three, the Racing Quattros include the LG, the Carbon, and the Carbon DB. All three rims use the new 24.2mm wide (ext.) rim profile that is meant to fit 25-50mm tires. The previous Quattro had a 15mm internal width compared to the new 17mm internal width for all Quattros. While the carbon models are a true 40mm deep rim, the aluminum rim sticks with a 35mm RDB or Dynamically balanced profile.
RDB is essentially Fulcrum’s way of accounting for the added weight of the valve system on the opposite side of the rim to keep it perfectly balanced. Using a machined aluminum braking surface with Fulcrum pads, the LG uses 16 spokes for the front and 21 in the rear with their Two-to-One lacing system. Weight for the Racing Quattro LG wheelset is claimed to be 1725g.
The Racing Quattro Carbon will be available in two different rims – one with a 3K carbon Diamant treated braking surface…
…and one without. The rim without the braking surface of course belonging to the Quattro Carbon DB or Disc Brake. While both carbon wheels use a full UD carbon construction, significant differences come in the form of the hubs and spokes. To accommodate the use of disc brakes the DB logically uses disc hubs available in 6 bolt or AFS (Fulcrum’s version of Centerlock). The DB also uses an increased spoke count with 21 spokes front and rear for their Two-to-One lacing but with the lacing reversed front and rear. The Quattro Carbon uses 18 spokes for the front and 21 rear Two-to-One with double butted steel aero spokes with aluminum alloy nipples.
Based on the photos it appears the Quattros could be run tubeless due to a sealed rim channel, though we are waiting for confirmation on this from Fulcrum. Update: According to Fulcrum, they are not tubeless compatible.
All three wheels utilize straight pull aero spokes with the exception of the DB which uses straight pull round spokes instead. At the center of each wheel is an aluminum hub with Fulcrum’s Adjustable bearing system and an HG freehub body with a plasma treatment and aluminum axle. Fulcrum states that there will be adapters available for the Quattro DB to run any axle or fork standard which seems like an important feature with how many options are out there. Weights for the carbon models are listed at 1555g for the rim brake wheelset, and 1605g for the DB with pricing and availability for all three TBA.
