.fk-pdp { font-family: inherit; font-size: inherit; line-height: inherit; color: inherit; } .fk-pdp h4 { font-size: 16px; font-weight: 700; margin: 30px 0 8px; border-bottom: 1px solid #e0e0e0; padding-bottom: 4px; } .fk-pdp p { margin: 0 0 12px; } .fk-pdp ul { margin: 0 0 12px; padding-left: 22px; } .fk-pdp li { margin-bottom: 5px; } .fk-pdp a { color: #0055cc; } .fk-pdp .note { font-style: italic; font-size: 13px; color: #555; } .fk-divider { border: none; border-top: 1px solid #e5e5e5; margin: 32px 0; } .fk-callout { border-left: 3px solid #111; padding: 14px 20px; margin: 20px 0 16px; background: #fafafa; } .fk-callout .ec-headline { font-size: 15px; font-weight: 700; color: #111; margin-bottom: 6px; } .fk-callout .ec-body { font-size: 13px; color: #444; line-height: 1.6; } .fk-advisory { background: #fff8e6; border: 1px solid #f0d080; border-radius: 8px; padding: 14px 20px; margin: 16px 0; font-size: 13px; color: #5a4000; line-height: 1.6; } .fk-table { width: 100%; border-collapse: collapse; font-size: 13.5px; margin: 10px 0 16px; } .fk-table td { padding: 8px 10px; border-bottom: 1px solid #eee; vertical-align: top; } .fk-table td:first-child { width: 190px; font-weight: 700; } .fk-table tr:last-child td { border-bottom: none; } 563 grams, and it clears a 32-inch wheel. Start with the weight. Swapping a suspension fork for this one takes more than four pounds off the very front of the bike — the single place where weight is most obvious, in how the front end lifts, how the bike accelerates, and how it feels at the top of every climb. Light, and not harsh The usual objection to a rigid fork is that it beats you up. That's mostly true of aluminum ones. Carbon's advantage here isn't only mass — the layup damps high-frequency buzz, the fast, fine vibration from gravel and hardpack that makes your hands ache after two hours. You still feel the big hits. You stop feeling the constant chatter underneath them. Pair it with a wide tire run at sensible pressure and you have a genuinely comfortable bike that weighs nothing and has no moving parts. Mounts for going places Three cargo mounts per leg — anything-cages, dry bags, fuel bottles Rack mounts — front rack or lowrider This fork does not have fender mounts. If you need fenders, the 4130 chromoly rigid fork has them, along with five cargo mounts per leg. It clears a 32er Almost nothing does. The 32-inch wheel is the newest size in mountain biking, and the thing holding it back is that there is barely a fork on the market with room for one. We've run this fork with a 32 x 2.4" tire. If you're building a 32er — or you're curious whether you could — this is one of the very few rigid forks that will take the wheel. Worth understanding what it does to the bike: a 32-inch wheel stands taller than a 29, so it lifts the front end and slackens the head angle back out. On a frame designed around a longer suspension fork, that height partly offsets the drop you get from this fork's shorter axle-to-crown — so a 32er build sits closer to the original geometry than a 29er build on the same fork does. 32-inch wheels, tires and rims are a young standard with limited availability. Check clearance at the rear of your frame before committing to a build — this fork handles the front, but your frame has to handle the back. Fitment Tapered steerer and current mountain bike standards throughout, so it drops into most modern 29ers: Tapered 1-1/8" to 1.5" steerer , 300mm, shipped uncut 15 x 110mm Boost front hub spacing, thru-axle included Post mount brake, 160mm native 29" wheels up to 3.0" of tire — or 32" wheels , run with a 32 x 2.4" Running 180mm rotors? This fork is post mount for a 160mm rotor. A 180mm rotor needs a +20mm post mount adaptor, and 203mm needs the corresponding larger one. The 4130 Trail ships with 180mm rotors front and rear — so if you're swapping this onto one, make sure you have the adaptor before you start the job. If you're fitting this to a 4130 Trail The RockShox Psylo Silver RC that ships on the 4130 Trail measures 550mm axle-to-crown . This fork is 495mm — 55mm shorter. That drop steepens the head angle, lowers the bottom bracket and shortens the wheelbase. The bike becomes quicker-steering and sits lower — a fast all-terrain bike rather than a slack trail hardtail. It's the intended outcome, not a compromise, but go in expecting a different bike rather than the same one with the suspension deleted. Weight saved over the suspension fork: 4 lb 6 oz. Specifications Material Carbon fiber Axle-to-crown 495mm Offset / rake 49mm Steerer Tapered 1-1/8" to 1.5", 300mm, shipped uncut Axle 15 x 110mm Boost thru-axle, M15 x 1.5 — included Brake mount Post mount, 160mm native Max rotor 180mm or 203mm with the appropriate adaptor (not included) Max tire 29 x 3.0" (measured on a 30mm internal rim) 32" compatibility Yes — run with a 32 x 2.4" tire Cargo mounts 3 per leg Fender mounts No Rack mounts Yes Weight 563g bare · 1 lb 6 oz (624g) with thru-axle Standard ISO 4210-M passed Tire fitment varies with rim width and tire brand — a 3.0" on a wide rim measures wider than the same tire on a narrow one. Leave clearance for mud. In the box Fork, 300mm uncut steerer 15 x 110mm thru-axle Living with a carbon fork Carbon is strong but it doesn't like being crushed. A few things worth knowing: Use a torque wrench on the stem bolts and don't exceed the stem manufacturer's figure. Overtightening a carbon steerer is the most common way people damage one. Use an expander plug, not a star nut. A star nut is driven into the steerer and will damage carbon. Inspect after a hard crash. Carbon can hide damage that aluminum would show as a visible bend. If you've had a significant impact, have the fork inspected before riding it again. Need fender mounts, or a straight steerer? The 4130 chromoly rigid fork has fender mounts, rack mounts, and five cargo mounts per leg, and includes a 180mm brake adaptor. It's heavier and costs less. See the steel rigid fork ? Buying a complete bike? The 4130 Trail is available built around this fork from the factory, which costs less than buying the bike and the fork separately. See the 4130 Trail ? ?? Professional installation recommended. Fitting a fork means cutting a steerer tube, setting a crown race, and adjusting headset preload — all of which affect whether the bike steers safely, and all of which are less forgiving on carbon. The steerer ships uncut on purpose. If you're not set up to do this properly, have a shop do it. Want to get technical? Full Geo / Specs here .