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Felt F4X (2012)


Product Category
Brand Felt
Size47, 50, 53, 55, 57, 60cm
ColorMatte Carbon


Bottom bracketFSA BB30
BrakesTektro high profile Euro-style cyclocross cantilevers w/ road cartridge brake pads
CassetteShimano 12-28T
ChainShimano 10 speed
CranksetFSA Energy Cross BB30, 46/36T; 47cm=165mm, 50cm=170mm, 53cm=172.5mm, 55cm-60cm=175mm
FeaturesInside Out InsideOut is a revolutionary internally optimized molding process that completely eliminates excess material, and therefore weight, inside the frame tubes and junctions.  Placing polyurethane inserts inside the frame during the molding process—especially at the bottom bracket and head tube area—and then applying  a precise amount of pressure and heat results in perfectly formed tubes, inside and out.

Control Taper By using a ControlTaper head tube with 1-1/8” upper bearings and 1-1/2” lower bearings, Felt is able to significantly improve front-end stiffness and steering precision without adding weight to the frameset.

Modular Monocoque Modular Monocoque Construction (MMC) is an advanced carbon fiber manufacturing technique that allows Felt to mold individual sections of the frameset and then join them together.  The main advantage of MMC is that it allows each section to be optimized to meet the specific engineering demands of that particular section of the frame.

UHC Performance
UHC Performance is a T700- based blend of raw carbon fiber, which has a tensile strength that’s 7.9 times greater than 3/2/5 titanium and a stiffness rating that’s 3.34 times greater than 6061 aluminum.  UHC performance brings the unmatched performance of a Felt carbon fiber bike to more affordable pricing levels than ever before. 
Fork typeFelt CXR UHC Advanced 3KP weave monocoque fork, carbon fiber Controltaper 1.125"" --> 1.5"" steerer tube, crown, & fork blades w/ cantilever brake pivots, & forged aluminum dropouts
Frame typeFelt Cyclocross UHC Performance MMC carbon fiber w/ 3KP weave, shoulder friendly top tube, InsideOut internal molding process, BB30 shell, Di2 internal/mechanical external convertible cable routing, 1 piece forged aluminum dropouts & 6061 forged aluminum
Front derailleurShimano Ultegra ¯31.8mm clamp
HeadsetFSA NO.42 CX 1.125"" --> 1.5"" integrated, w/ aluminium 15mm conical spacer w/ brake cable hanger, 2 X 10mm aluminum headset spacer, 1 x 5mm aluminum headset spacer, Felt aluminum top cap & 7075 anodized aluminum bolt
Hub frontFulcrum Racing 7 CX aluminum 20H & Fulcrum quick release
Hub rearFulcrum Racing 7 CX aluminium 24H 2:1 w/ Shimano 10 speed compatible freehub body & Fulcrum quick release
Rear derailleurShimano Ultegra SS short cage
Recommended forCyclocross
Rims typeFulcrum Racing 7 CX 24mm deep 6061 aluminium rim, 20H front, 24H rear
SaddleFelt SL road saddle w/ carbon fiber injection molded base, polyurethane foam, embossed cover & hollow Cr-Mo rails
ShiftersShimano Ultegra STI
SpokesFulcrum Racing 7 CX straight pull 2.0mm Dynamic Balance stainless steel laced radial front, 2:1 Two-to-Oneª 2x drive, radial non-drive rear; brass external nipples
StemFelt SL 6061 aluminium 3D forged +/-7i rise, 31.8mm bar clamp, custom Cr-Mo bolts, 131g; 47cm=80mm, 50cm=90mm, 53cm-55cm=100mm, 57cm=110mm, 60cm=120mm
TiresVittoria Cross XG 700c x 32c Kevlar foldable
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