Greatness is measured in the details. A curated collection of core metrics that power your journey and command the terrain.
140cc 4-Stroke Oil-Cooled
~65 mph
155 miles
265 lbs
Power That Won't Quit
Climb harder, send it faster, and claw your way out of anything — 140cc of pure kinetic energy, built to keep running when the trail gets punishing.
Eats Up Any Trail
Rocks, ruts, mud — roll right over the obstacles that stall out other bikes. With aggressive geometry and knobby traction, you don't navigate the trail; you dominate it.
Dialed for Any Rider
Find your rhythm and rail the corners. The 4-speed manual puts full control in your hands — intuitive for the learners, aggressive enough for the veterans.
Soaks Up the Hits
Send a jump, smash through the chop, and let the suspension take the beating. Less rattle, zero fatigue, and maximum forgiveness when you decide to go big.
Stops on a Dime
Steep, sketchy downhill? No problem. Hydraulic discs give you surgical precision to scrub speed instantly. No fade, no drama, just total control.
Don’t let the heat kill your session. This Yinxiang® oil-cooled powerhouse runs cooler when you’re pushing the limits, so you spend less time in the garage and more time tearing up the trails.
Built to take a beating so you don’t have to walk home. Engineered for high-torque starts and rough terrain to resist stretching, slipping, and failure under load.
Thumb the button for instant starts, or kick it old-school when you're out deep. Fires up every time, whether it's freezing cold or caked in trail grit.
High-visibility beams to keep you seen from dusk till dark. Whether you're charging through the twilight or hitting the trails after hours, you’ll never have to cut your session short
Engine
140cc 4-Stroke Oil-CooledPower
11.0 hp (8.2 kW) @ 7,500 rpmMax Torque
10.2 N·m @ 6,000 rpmTop Speed
~65 mphTop Range
155 milesSeat Height
33.9″Net Weight
170.9 lbsMax Load
265 lbsTransmission
4-Speed Manual ClutchStart Type
Electric Start & Kick StartBrake Type
Hydraulic Disc (Front & Rear)Wheel Size
17″front / 14″rearTire Width
Front 2.76″ / Rear 3.54″Wheelbase
49.2″Max Gradient
30°Fuel Tank Capacity
1.4 galFuel Type
Gasoline OnlyL * W * H
70.1″ × 30.7″ × 44.1″
Overall rating: 4.4 / 5 from 13 reviews.
I love it it’s a pretty good dirtbike and it’s good for beginners like me who don’t know how to drive clutch yet
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
Really decent bike. Great size and sounds good too.
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
Thought I would give FRP a chance and ordered their 140 cc little dirt bike. Had it delivered to my apartment. The box was badly torn up but the bike had no damage inside of its steel cage. Put it together but had some problems getting it to start. Found that one of the wires would not stay connected and it was an easy fix. After that it started right up and idled smoothly. Warmed it up and put it in gear… It jumped forward and died. Had to make some adjustments with the clutch cable before it would shift properly. Everyone should keep in mind though that this bike cost about 1/3 the price of for instance a 140 cc Kawasaki dirtbike. It is a good looking bike and comes with a one year warranty. I look forward to hitting the OHV trails with it.
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
Got the bike all set up which was pretty easy and it started right up. Bike rips and it a lot of fun
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
Fired up instantly with the electric start—no kicking needed. The Zongshen engine is solid and powerful on trails. Brakes stop confidently, even downhill. Came mostly assembled; had it ready in under an hour. Great value with extras included. Perfect size for shorter riders. Customer support was quick and helpful. Looks awesome, feels sturdy, and my teen loves it!
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
This bike is great I got it for my grandson and he loves it
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
Not a bad bike for the price. Just make sure you know what you’re doing when you build it. It’s pretty simple though for the most part
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
yo this lowkey tuff when I was riding I was doing wheelies and doing wheelies over peoples body when they was crying for their mom I trapped them in my soundproof underground bunker and made them suffer until they said sorry so this bike is great.
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
Hey hello so I just recently got my fx 140 I went to pick it up since they were taking a while with shipping it and it was due on the 21st but when I pick it up the box was kinda damaged but I took photos in case like anything happens but otherwise I know you guys but that thing around it to protect it but I’m excited to ride it but I haven’t set it up yet because I didn’t have the time and I also watch your guys YouTube video on how to assemble the fx 140 but I was wondering if you guys got more tutorials videos that are longer or something because it looks kind of rushed but that’s just me so I apologize but it also going to be my first time assembling a dirtbike so I don’t want to do anything wrong or stuff and I just want this to be done the right way and also because I did find one video on TikTok a guy assembling his fx 125 and he was doing some wiring with the cables where the handlebar is so I’m also wondering like if that is something I’ll need to do with wiring those cables to connect them or if they are already connected together. I plan on assembling it on my next off day on Friday because I’ll have all the time for myself so I’m sure for my first time assembling it might be a pain in the butt so it’ll maybe take my hours with patience lol and I might have more questions which I’m sorry to bother to ask you guys but man I can’t wait. I’m also thinking about getting a mini bike soon. I wanted to build one but I got no knowledge so I’m going to have to build my way up there and also for the points on the frp website do the points disappear after a certain amount of time or does it stay there? Am Sorry for asking to much but I appreciate you guys too.
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
It's actually a pretty good budget dirtbike for the price. I already have 400 miles on mine. I have had no issues other than the kickstand spring falling off. Which was my fault. Overall great bike.
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
My kid LOVES IT so much. He loves riding with his buddies. So far, the bike works great and has been a great purchase! If you want to see videos of him on the dirtbike, check out his YouTube channel at Gradyn_R
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
it was really hard to put together but is so worth the thrill
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
When are they gonna be back in stock?
140cc Dirt Bike for Teens & Adults — FRP Moto FX140, Oil-Cooled 4-Speed Manual
Real owner reviews, comparisons, and ownership support — built from 865+ verified buyer experiences.
Read Real Owner Reviews
Real photos, assembly notes, long-term ownership, and honest complaints addressed.
Read reviews →After-sales supportFRP Ownership Promise
Parts, setup help, maintenance basics, and long-term ownership — exactly what to expect.
See ownership promise →Honest comparisonFRP vs Coleman — Which Wins?
Side-by-side specs, weight, brakes, control, and value. Picked by category, not forced.
Compare FRP vs Coleman →First-time buyerFirst Gas Mini Bike Buyer Guide
How to choose between 40cc and 99cc, safety features, and which FRP fits your situation.
Open buyer guide →After your orderFRP First Ride Kit
Official start guide for new owners — setup videos, safety, and what to do after unboxing.
Start with First Ride Kit →Family rider communityFRP Rider Community
Family ride events, Texas Rider Series recap, owner photos, and how to join future meets.
Join the community →65 mph top speed, with up to ~155 miles per 1.4-gallon tank. Real-world speed depends on rider weight, terrain, and gearing.
A 140cc 4-stroke oil-cooled engine making 11.0 hp (8.2 kW) @ 7,500 rpm and 10.2 N·m of torque @ 6,000 rpm, with electric and kick start and hydraulic disc brakes front and rear.
In the 17/14 build they share a chassis: same 33.9″ seat, same 49.2″ wheelbase, same 265 lb load rating. The difference is the engine. The FX140 is oil-cooled, makes 11.0 hp and 10.2 N·m against the FX125's 8.7 hp and 8.8 N·m, and is rated to climb 30° versus 28°. Oil cooling is what holds that power up on long climbs, hot days, and hour-long sessions, where an air-cooled engine starts to fade. For short sessions in the yard, cooler weather, or a lighter rider, the FX125 is enough.
Seat height is 33.9″ on a 49.2″ wheelbase, with 17″ front / 14″ rear wheels — the same seat height as the FX125 in its 17/14 build.
Teens and adults — bigger or more experienced riders, up to a 265 lb max load. If you're new to off-road, start on a smaller bike like the FX125 or FX40 first.
The FX140 supports a 265 lb maximum rider load. The bike itself weighs about 170.9 lb.
Both names get used — it's a full off-road dirt bike, often called a 140 pit bike. It runs an oil-cooled 140cc engine with a 4-speed manual transmission.
It's a 4-speed manual with a clutch. It's a new skill if you're coming off a no-clutch bike like the FX40, but most riders pick up the basics in an afternoon on flat ground.
No. It's EPA off-road only — built for trails, private property, farms, and open land. It is not street legal.
No — the FX140 is not sold or shipped to California (Prop 65).
Hydraulic disc brakes front and rear, long-travel suspension, and electric start with a kick-start backup. It runs on regular gas with no oil mixing.
It ships mostly built — about 30–45 minutes with the included tools. Setup videos are in Service Videos & Tutorials.
A 1-year limited warranty. It ships within 72 hours via LTL freight. Freight delivery is curbside and the carrier calls to schedule an appointment, so give a valid phone number and email — plan on help getting the crate off the curb. Not shipped to California (Prop 65), U.S. protectorates, APO/FPO, or overseas. The box includes the First Ride Kit: gloves, goggles, anti-fog spray, backpack, hydration bladder, tools, and the manual.
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