A hardtailmade for you.

A hardtail has a suspension fork at the front and a rigid rear triangle. Full suspension adds a rear shock and pivot system that lets the back wheel move independently of the frame. The hardtail is simpler, lighter, and cheaper to maintain, but the rider absorbs what the rear wheel hits. Full suspension smooths that out, which helps on very rough or technical terrain. On a lot of trails, a hardtail is more capable than it gets credit for.

A few reasons. They're lighter for the same money. Maintenance is simpler, no rear shock to service, no pivot bearings to replace on a schedule. They make you a better rider, because you can't rely on the bike to smooth out poor line choices. And for XC racing, cross-country touring, or riding that mixes trail with fire road, the efficiency advantage is real. Full suspension wins on raw descending capability and rider fatigue on very rough terrain. Hardtails win on most everything else.

XC geometry prioritises pedalling efficiency: steeper head tube angle (around 68 to 70 degrees), shorter reach, higher bottom bracket. Fast and efficient, but less confidence-inspiring on steep descents. Trail geometry slackens everything out: head tube angle around 64 to 67 degrees, longer reach, lower bottom bracket. More stable at speed and on steep terrain, but slightly less efficient on long climbs. Where your riding actually sits determines which end of that spectrum makes sense. Most modern hardtails have settled somewhere in the middle.

29" rolls over obstacles more easily, maintains momentum better, and has become the standard for most trail and XC riding. 27.5" is more nimble, accelerates faster, and suits shorter riders or a more playful, technical riding style. The mullet setup (29" rear, 27.5" front) is a legitimate option on some frames, it combines the roll-over of a large rear wheel with a more manoeuvrable front end. If you're unsure, 29" is the usual starting point for trail and XC.

Travel roughly maps to trail aggression. 100mm suits XC and cross-country touring. 120mm covers most trail riding well. 130 to 140mm handles technical descents and more committed trail work. Beyond that, you're pushing into territory where the rigid rear becomes the limiting factor anyway. More travel raises the front end, alters the geometry, and adds weight. Match it to the trails you actually ride, not the hardest trail you might one day attempt.

Front and rear can differ, and often should. A grippier, more aggressive tread on the front gives confidence in corners. A faster-rolling tyre on the rear saves energy on the climbs. Width depends on terrain: 2.25 to 2.4" covers most trail riding, 2.4 to 2.6" if you're riding rougher or looser ground. Pressure matters more on a hardtail than on full suspension. Too high and the rear skips and deflects; too low and you risk pinch flats on the rigid triangle. Most riders run lower than they initially think they should.

Differently to road or gravel. You're moving around the bike constantly, standing, pushing back on descents, driving out of corners. Reach is the most important number: too short and you're cramped heading downhill; too long and climbing out of the saddle becomes a fight. Stack matters less than on a road bike because bar height and stem give you a lot of adjustment room. The real test is how the bike feels standing on the pedals, not sitting.

Yes, with the right geometry and an engaged rider. The limitation isn't the bike's capability, it's the amount of work required to keep the rear wheel tracking on very rough, choppy terrain. A hardtail demands more precise line choice and more active riding than full suspension. That's also what makes it a better teaching tool. Most riders who've spent real time on a hardtail come out the other side with better technical skills for it.

Aluminium is stiff, light, and dominates at most price points. Carbon is lighter still and can be tuned for compliance, but expensive and not repairable in the field. Steel is heavier but has natural compliance, rides smoothly, and can be fixed anywhere. Titanium sits between steel and carbon, lighter than steel, more compliant than aluminium, corrosion-proof, and built to last indefinitely without degrading. For a custom frame you're planning to ride for decades, titanium makes a strong argument.

1x has almost entirely replaced 2x on mountain bikes. The simplicity and ground clearance benefits are more pronounced off-road than on gravel, a front derailleur is one more thing to bash on rocks and roots. Modern 12-speed 1x drivetrains cover enough range for almost any terrain. 2x still appears in XC racing where precise gear steps and top-end efficiency matter, but for trail riding it's the clear exception. 1x is the default, and a sensible one.