The 4 Series puts Madone's Tour-winning pedigree within reach. Perfect for the rider who values performance and demands value.

Better performance - 
New technologies including BB90, all-new Bontrager RL fork, and 6 Series-inspired frame offer 20% more stiffness and eliminate 150 grams from the fuselage.   



Amazingly light - 
At 1100 grams, the all-new 4 Series is the lightest entry-level race bike Trek has ever built.



Loaded with technology
 - BB90, E2 head tube, DuoTrap, all-new RL fork—4 Series is loaded with more technology than any other bike in its class.

Madone 4.5

    •    Colours: Starry Night Black/Bright Silver, Crystal Pearl White/Platinum
    •    Frame Sizes: 50, 52, 54, 56, 58, 60, 62cm
    •    Frame:  400 Series OCLV Carbon, E2, BB90, DuoTrap compatible
    •    Fork:  Bontrager Race Lite w/E2 aluminium steerer, carbon legs
    •    Wheels:  Alloy hubs; Bontrager Approved alloy rims
    •    Tires:  Bontrager R1, 700x23c
    •    Shifters:  Shimano 105 STI, 10 speed
    •    Front Derailleur:  Shimano 105
    •    Rear Derailleur:  Shimano 105
    •    Crank: Shimano R565, 50/34 (compact)
    •    Cassette:  Shimano Tiagra 12-30, 10 speed
    •    Saddle:  Bontrager Affinity 1, steel rails
    •    Seat Post:  Bontrager Carbon, 20mm offset
    •    Handlebars:  Bontrager Race VR-C, 31.8mm
    •    Stem:  Bontrager Race Lite, 7 degree, 31.8mm
    •    Headset:  Integrated, cartridge bearings, sealed, alloy, 1-1/8" top, 1.5" bottom
    •    Brakeset:  Alloy dual-pivot brakes w/Shimano 105 STI adjustable-reach levers