RAD

RESEARCH AND DESIGN

Bunch Bar Project

THE PROJECT

A road and track handlebar, designed and made to meet the equipment rules for the LA 2028 Olympic Games. Design by Will Seitz. Production by 64Cycles. Status: in development.

THE BAR

Carbon fibre (CFRP) construction.
Aero top section.
Flare at the maximum the rules allow, and width at the minimum the rules allow.
Wrist clearance is a priority.
Interchangeable track grips, with integrated bar end plugs and an integrated grip surface for track use.
Swappable 3D printed inserts for the tops and the drops, so aero shapes can be tested and changed.
Long hood section that encourages an aero tuck in the hoods.
Hand cutout on the tops for Madison racing.

THE STEM

CNC machined 7075 aluminium.
Reach adjustable from 80 to 180 mm.
Fits both integrated and non-integrated headsets.
Stack height adjustable in 5 mm steps, in the style of a time trial riser.
Possible mounting on non-round steerer tubes, such as the Argon 18 design.

THE RULES WE DESIGN TO

Under the 2027 UCI track rules, a bar must be at least 350 mm wide at the outermost point of the drops, and hold that width over at least the bottom two-thirds of the drop height. This rules out extreme flare.
The rules define a set of bounding boxes for the stem, the tops, and the drops, with maximum and minimum section sizes. The areas between those boxes are not regulated.
Up to two elements are allowed in a section, and each one must meet the size limits on its own.
Prototype equipment cannot be authorised for track events or record attempts. The bar has to be on sale to the public.
A new technical innovation goes to the UCI Equipment Unit, which responds within six months of a complete application.
Our working notes put the 2028 price cap at 1,500 euros.

LA28 REGISTRATION DATES

Equipment registration: 12 March to 28 August 2027.
UCI Final Equipment List published: 29 February 2028.
Online equipment selection: 1 March to 1 July 2028.
Equipment checks on site at the Games.

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