Browse Carbon Hardtail Frames

Choose the hardtail frameset that matches your build

FM238 is the XC-oriented option with a published 29 × 2.4 in reference. FM218 and FM228 also list a 27.5 × 3.0 in setup, and the current sheets differ on bottom bracket, hanger and seatpost diameter. Confirm the version you order rather than mixing those details across models.

FM238 XC hardtail

The published configuration lists 29 × 2.4 in tires, BSA 73 mm, a 31.6 mm seatpost and UDH. Confirm the fork length and axle hardware for the size you want.

FM218 Boost hardtail

The published configuration lists 29 × 2.4 / 27.5 × 3.0 in tires and a 12 × 148 mm rear end. Confirm whether the ordered version uses BB92 or T47, and check the brake-mount version.

FM228 hardtail

The published configuration lists 29 × 2.4 / 27.5 × 3.0 in tires and a 27.2 mm seatpost. Confirm the hanger and bottom-bracket version before choosing a derailleur or crank.

Compare hardtail platforms and their main fit checks

Specifications differ between models and versions. Confirm the order specification where product material lists more than one BB, hanger or brake-mount option.

Model Platform Published wheel/tire reference Main build check
FM238 XC hardtail 29 × 2.4 in Current sheet: BSA 73 mm; 31.6 mm post; UDH
FM218 Boost hardtail 29 × 2.4 / 27.5 × 3.0 in 12 × 148 mm rear; confirm BB92/T47 and brake version
FM228 Hardtail 29 × 2.4 / 27.5 × 3.0 in 27.2 mm post; confirm hanger and BB version

Choose compatible parts for your hardtail frameset

Settle wheel size, axle standard and the BB or hanger version before comparing price or weight.

Set the wheel and tire configuration first

FM238 is published around a 29 × 2.4 in XC setup. FM218 and FM228 also list a 27.5 × 3.0 in option, so treat wheel size as an order choice rather than a shared default.

A wheel that fits one of these hardtails is not automatically a match for the others, and it will not fit the fat-bike or full-suspension platforms on the main MTB category.

Resolve BB, hanger and brake variants before ordering

The material for FM218 and FM228 includes several BB or hanger choices. Treat these as order-specific versions, not as standards supported simultaneously by one frame. Confirm the actual shell and hanger before buying a crank or derailleur.

Brake descriptions and older photos can also differ from the current specification. Ask for the mount type and supported rotor arrangement for the selected version. FM238 currently lists UDH, but still confirm the hanger and seatpost diameter in the quote.

Check fit and the complete frame package

Use the geometry for the intended fork and frame size. Check saddle height, reach and standover, then allow for the required seatpost or dropper insertion. A longer fork can change the position and handling; verify the permitted configuration.

Ask whether the quote includes the headset, axle, seat clamp and small mounting parts. Frame weight references may use different sizes, finishes or hardware, so compare equivalent conditions.

Why Mondince Carbon Hardtail Frames

Fork and axle fit

Confirm the intended fork length and offset, plus the rear axle standard and hardware. A Boost rear end does not define the fork, brake mount or headset by itself.

Model-specific component standards

Match hub spacing, axle hardware, brake mounts, BB and hanger to the actual frame version. Seatpost diameter also differs between these hardtails, so check that before choosing a dropper or rigid post.

Geometry for the selected size

Compare reach, stack, standover and seatpost insertion for your position. Confirm the available sizes rather than assuming each model has the same range.

Carbon Hardtail Frame FAQ

Are these complete bikes or hardtail framesets?

These listings are carbon hardtail frames, with frameset options depending on the quote. Confirm which headset, axle, seat clamp and small parts are included before you compare builds.

Which model should I compare first?

Start with wheel size and the published standards. FM238 currently lists a 29 × 2.4 in XC setup with BSA 73 mm, a 31.6 mm post and UDH. FM218 and FM228 also list a 27.5 × 3.0 in option and need the BB, hanger and brake version confirmed.

Can I transfer every part from another Boost mountain bike?

Confirm axle hardware, BB, brake mounts, fork dimensions, hanger and seatpost. Boost spacing alone does not establish those interfaces.

What should I include in a hardtail enquiry?

Provide the frame model and size, wheel and tire choice, fork, drivetrain, brake and seatpost part numbers. Confirm the supplied hardware and finish before ordering.

Useful Hardtail Frame Guides

Carbon MTB Frames

Compare the 120 mm full-suspension and fat-bike platforms on the main carbon MTB frame category.

Choosing the Right Hardtail MTB Frame

A buying guide that walks through fit, use and build checks before you choose a hardtail.

Mountain Bike Frame Size Chart

Use MTB sizing references to avoid poor fit and handling.

Need Help Choosing a Carbon Hardtail Frame?

Send Mondince your target rider, terrain, wheel size and quantity. We can recommend the right carbon hardtail platform for sample or OEM production.

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