![]()
Boss Zenith Plume
Ascend to the apex, reign supreme over all.
An aerodynamic marvel, freshly conceived and meticulously honed.
A sublime cycling odyssey, where velocity becomes effortless grace.
An innovative featherweight creation, embodying the liberating essence of the breeze.
A stealthy ally on the circuit forged solely for the pursuit of the exceptional.
Features
Zenith Plume Upgrades
-
High-Modulus Carbon Frame
Constructed with Japanese Toray T1100 carbon fiber, strategically placed in critical zones for maximum stiffness and weight reduction. -
Superior Stiffness & Power Transfer
Enhanced torsional and lateral rigidity around the bottom bracket ensures sharper acceleration and more efficient energy transfer. -
Lightweight Advantage
Advanced carbon layup results in a lighter frame compared to the standard Zenith, boosting agility and climbing efficiency. -
CeramicSpeed Headset
Pre-equipped with a premium CeramicSpeed bearing system for ultra-smooth steering, minimal friction, and long-lasting durability. -
Elite Performance Experience
A blend of responsiveness, precision, and efficiency that sets the Plume apart from the standard Zenith, designed for riders seeking the highest level of performance.
Integrated:1-1/2 inch large bearing paired with a standard 28.6mm steerer tube on the fork provides ample space for routing cables.
Aerodynamic: The aerodynamic shape has been optimized through Large Eddy Simulation (LES) and Computational Fluid Dynamics (CFD) simulation using ANSYS software. At the zenith of aerodynamics, the design of this model approaches the very limits set by UCI regulations. Every detail has been meticulously crafted to ensure minimal air resistance. From the flattened headtube to the extra-wide seatstays, every curve and line is dedicated to achieving the ultimate aerodynamic performance.
TCF Tech manufacture:

The frame is made using TCF-TeXtreme Carbon Fabrics, achieving greater lightness without compromising stiffness or strength, and also improving impact resistance and surface smoothness. The blind carbon fibers in the TeXtreme Spread Tow (less than 0.05 mm per layer) thin layers suppress or delay the initiation of cracks in the composite structure under load. Preventing cracking and damage when subjected to higher loads, results in superior performance of the composite material.
NACA Tube Design: The NACA (National Advisory Committee for Aeronautics) Kamm Tail airfoil section tubing, inspired by aircraft wing profiles, features a truncated end that is cut off sharply near the trailing edge. This combination of airfoil design with a Kamm tail, similar to the currently popular D-shaped tubing, offers superior aerodynamic performance by efficiently slicing through the air.
BROSS Zenith Plume 7i – Specifications
Frame: BROSS Zenith Plume Carbon Frame,Internal Cable Routing, Flat Mount Dis,142x12mm Thru-Axle, BSA-Threaded BB
Fork: BROSS Zenith Plume Carbon Fork,Flat Mount Disc, Internal Cable Routing,100x12mm Thru-Axle
Headset: BROSS Zenith Fully Hidden Internal Cable Routing Headset,Equipped with CeramicSpeed® SLT Ceramic Bearings
Handlebar: BROSS Carbon Aero Integrated Handlebar
Seatpost: BROSS Zenith Plume Aero Carbon Seatpost
Wheelset: VOSO Lite Core 60mm carbon spokes carbon wheelset 1400g or BROSS BCD-5 Carbon Rim,and Carbon Spokes 55mm Depth 1400g
Tires:Continental Grand Sport Prix 5000 STR Tubeless 700*28c Tire
Groupset (Shimano Ultegra R8100 2x12-Speed)
-
Shifters: Shimano Ultegra ST-R8170
-
Front Derailleur: Shimano Ultegra FD-R8150
-
Rear Derailleur: Shimano Ultegra RD-R8150
-
Crankset: Shimano Ultegra FC-R8100 50/34T
-
Cassette: Shimano Ultegra CS-R8101 11-34T
-
Chain: Shimano Ultegra CN-M8100
-
Brake Calipers: Shimano Ultegra BR-R8170
-
Rotors: Shimano RT-CL800
Cockpit & Contact Points
-
Saddle: Fizik Antares carbon 3D Printed Saddle
-
Grip: Fizik Grip
Size Chart:
- XXS:150-160cm
- XS:158-167cm
- S:165-174cm
- M:172-180cm
- L:178-185cm
- XL:182-190cm
- XXL:188-200cm
Geometry


default handlebar size
- XXS:360*80 mm
- XS:380*90 mm
- S:400*90 mm
- M:400*110 mm
- L:420*110 mm
- XL:420*120 mm
- XXL:420*130mm
Warranty.
From the date of purchase, the warranty period for each part is as follows:
Frameset: 5-year warranty under the non-human-caused damage or accident
Front and rear derailleurs: 6-month warranty under the non-human-caused damage or accident
Other Components: Wheels, saddle, shifters, cassette, crankset, hubs, handlebar, seatpost, brakes, suspension, bottom bracket - 6-month free warranty under the non-human-caused damage or accident
The wearable parts not listed above, such as inner tubes and tires, chains, cables, brake pads, brake hose and cables, shifter hose, and cables, etc. do not provide a free warranty.
During the warranty period, if the following circumstances cause damage, the Bross does not provide a warranty, and BROSS dealers can provide paid maintenance services.
Wrongly installed or misused by the provisions of this manual; (such as carrying persons, etc. exceeding the provisions)
Not properly maintained by this manual;
Exceeding the scope of the bicycle; (for example, using a road bike for mountain off-road)
Natural disasters and other irresistible situations;
There is a problem with the parts that a non-BROSS dealer has repaired:
After modification or change of the original factory configuration, and problems with the requirements of other companies:
Other parts damage and failure caused by the failure to replace the wearable parts in time.