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Level R4

Level R4


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Frame material Aluminium Lite
weight 13,80 kg
Fork SR Suntour XCM RL (Travel, skok 100mm, remote lockout)
Rear shock -
Front hub Joy Tech D041DSE
Rear hub Joy Tech D142DSE
Tires Schwalbe Smart Sam 27.5"x2.1"
Rims Kross Disc 27.5" (alloy, double wall)
Front derailleur Shimano Altus FD-M371 (DownSwing)
Rear derailleur Shimano Deore RD-M592 SGS Shadow
Front brake Shimano BR-M396 (disc, hydraulic, rotor S/M - 160mm, L - 180mm)
Rear brake Shimano BR-M396 (disc, hydraulic, rotor 160mm)
Brake levers Shimano Disc BL-M396 (hydraulic)
Shifters Shimano Altus SL-M370 3x9
Crankset Shimano Altus FC-M351 44/32/22T
Bottom bracket Shimano BB-UN26
Chain Shimano Deore CN-HG53
Casette / Freewhell Shimano Alivio CS-HG400 11-34T
Handlebar Kross Sport Components (alloy, 780mm 31.8mm)
Stem Kross Sport Components (alloy, S - 80mm, M - 90mm, L - 100mm, rise 7°)
Seatpost Kross Sport Components (alloy, S/M - 350mm, L - 400mm)
Headset VP A41AC Semi-Integrated
Saddle Kross VL-1353
Grips Kross
Pedals Alloy


  Wheel size
fs Frame size 17 19 21
st Seat tube length 430 480 530
tt Top Tube effective length 560 603 620
ht Headtube length 120 130 140
sa Seat tube angle 73 73 73
ha Headtube angle 70,5 70,5 70,5
cs Chainstay length 427 427 427
wb Wheelbase 1073 1092 1109
reach Reach 400 415 429
stack Stack 605 615 624
bbdrop BB Drop 45 45 45

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Improved version of the aluminum 6061 alloy is a perfect compromise between high stiffness and low mass. It is very resistant to external conditions, breakages and impacts. Thanks to the butting of all the frame tubes, we were able to retain toughness of the construction, while at the same time, reduce construction mass.
Method used to shape tubes by pressurized liquid injection. This technology primarily creates a lighter structure characterized by higher durability and precise finishing.
The post mount system is a crucial solution for a racing bicycle. Braking precision is increased due to the elimination of unnecessary adapters, which influences the stiffness of the connection between the frame and the clamp. Better heat rejection prolongs the life of brakes and improves their efficiency.
Painting by placing electrified powder paint molecules onto aluminum, which requires heat treatment. After sintering the varnish surface creates a perfectly smooth coat which is very resistant to mechanical damage.
We created a system of exchangeable dropouts in order to protect our frames as much as possible. In case of damage they can be easily and quickly exchanged. Screws or a special nut are used for the dropout in order to minimize frame damage.
Guarantee large brake force and good modulation of it even in the most severe weather conditions, they also last for much longer than traditional brakes.
Precise technique to even out the welding which raises the aesthetic qualities of the structure without having a negative effect on durability.