Break Away from the Wind, Boundless Speed
The KOSEEA PIONEER SLR+ is an elite-tier, high-performance aerodynamic road racing frameset engineered for ultimate speed, stiffness, and precision handling. Proven on the professional circuit as featured in the Chengdu Continental Team Edition, this championship-ready frameset is crafted from premium high-modulus carbon fiber to give competitive cyclists a distinct edge when breaking away or sprinting for the finish line.
Performance Features
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UCI Continental Team Proven: Co-developed and actively raced by the professional Chengdu Continental Team, built to withstand the rigorous demands of multi-stage professional racing.
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Toray T1000 Carbon Fiber Reinforcement: Engineered using premium high-modulus carbon fiber composite materials, strategically reinforced with genuine Toray T1000 carbon cloth at critical high-stress sections for uncompromised structural integrity and explosive power transfer.
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Next-Gen Aerodynamic Evolution: Upgraded with a refined streamlined profile and an integrated wide-shoulder fork design that dramatically cuts through the air.
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Zero-Turbulence Fork Design: Completely eliminates external through-holes on the front fork. The fully sealed fork thread holes effectively eliminate air turbulence, minimizing drag and lowering power loss.
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Optimized Stiffness-to-Weight Ratio: The advanced material layup delivers a lightweight chassis with significantly higher structural stiffness and faster frame responsiveness compared to previous generations.
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Fully Integrated Cable Routing: Designed from the ground up for a completely hidden internal cable layout, ensuring maximum aerodynamic efficiency and a clean, sleek aesthetic.
Specification
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Frame: KOSEEA Pioneer SLR+ Full Carbon, Toray T1000 High-Modulus Carbon Fiber reinforcement, 12×142mm thru-axle, Flat Mount Disc, fully internal routing.
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Fork: KOSEEA Pioneer SLR+ Full Carbon, Aero Wide-Shoulder design, 12×100mm thru-axle, Flat Mount Disc, zero-turbulence sealed thread holes.
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Frame Weight: Approximately 985g (Size dependent, excludes hardware and paint).
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Fork Weight: Approximately 390g (With uncut steerer tube).
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Bottom Bracket: T47 68mm
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Shifter / Brake Levers: Shimano 105 Di2 R7150, 12-speed electronic shifting.
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Front Derailleur: Shimano 105 Di2 R7150, braze-on, 2×12-speed.
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Rear Derailleur: Shimano 105 Di2 R7150, 12-speed.
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Crankset: Shimano 105 FC-R7100, 50-34T chainrings.
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Cassette: Shimano 105 CS-R7101, 11-34T, 12-speed.
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Chain: Shimano CN-M6100, 12-speed.
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Brake Calipers: Shimano 105 R7170 Hydraulic Disc Brakes.
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Brake Rotors: RIRO DB-R41 Super Light Center Lock (Front: 160mm/119g | Rear: 140mm/104g).
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Wheelset: VOSO Lite Basic 50mm Deep Profile Full Carbon, Tubeless-Ready.
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Tires: Vittoria Corsa Pro 700×26C.
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Handlebar / Cockpit: KOSEEA Carbon Integrated Handlebar & Stem system, aggressive -10° stem angle, 127mm drop, 77mm reach, fork clamp diameter 28.6mm.
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Seatpost: KOSEEA Aero Carbon Dedicated Seatpost, Di2 internal battery compatible.
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Saddle: Selle Italia Model X Performance road saddle.
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Pedals: Platform pedals included.
- Weight: 8.0kg in M
Geometry
Size Chart
- S:155-165cm
- M:163-173cm
- ML:172-180cm
- L:178-185cm
- XL:183-195cm
Handlebar Geometry
Warranty.
From the date of purchase, the warranty period for each part is as follows:
Frameset: 2-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.