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Mcfk Carbon Offset Seatpost

$345.00 $293.25
(You save $51.75)
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Product Description

Closeout - 15% Discount

Mcfk's seatposts are among the very lightest available and feature solid, German-engineered construction and impeccable finish work. For riders that require a rearward saddle position, this seatpost satisfies those biomechanical requirements while adding a weight penalty of only 10% (compared to Mcfk's zero setback seatpost). Unlike other seatposts of similar design, Mcfk's lower rail clamps offer a much greater contact area, allowing greater security and support for delicate carbon rails. Cosmetic options include 3k weave and unidirectional, both in high gloss finish.

Mcfk seatposts are manufactured in Germany, and feature a two-year warranty against defects in materials and manufacturing.


Mcfk's setback seatposts have been weight optimized by limiting the clamping range of the seatpost collar. The following table expresses acceptable seatpost extensions, measured from the center of the saddle's rails to the point where the seatpost exits the frame. Improper installation of this seatpost will void the warranty and can cause seatpost failure and/or serious injury. Please feel free to contact us for compatibility questions.

Insertion Ranges

We measure all of our insertion ranges from the rails of the saddle to the top of the top of the collar. It's important to make sure you buy the length post that matches your needs. The clamping area, defined by the insertion point, is built up to handle the extra forces securing your post requires.

Mcfk posts cannot be cut or shortened and may be clamped only in the reinforced clamping zone.Torque specs, 5 nm max for saddle rails and 6 nm max for seat collar. Tacx carbon assembly paste is strongly recommended.


We highly recommend the use of a carbon assembly compound (such as Tacx Dynamic Assembly Paste) on the seattube/seatpost interface to limit the clamping torque required. A torque wrench is highly recommended as well. Mcfk recommends a maximum seat collar torque of 6 Nm, and a maximum rail clamp torque of 4 Nm.

Product Specifications

Setback20 mm
Bolt Material6/4 titanium, m5
Yoke Material7075 T6 aluminum
Max torque6 Nm
Rail Compatibilityround
Useroad, cross country, cx
Rider Weight Limit85 kg (187 lbs)
Insertion Ranges
250 mm Length110 - 170 mm
300 mm Length150 - 210 mm
350 mm Length190 - 250 mm
27.2 x 300 mm107 grams
27.2 x 350 mm113 grams
31.6 x 300 mm112 grams
31.6 x 350 mm119 grams
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