The Bike Hub
Every bike on the gate.
Spec it. Set it up. Ride it.
Real specs for the dirt bikes and ATVs Midwest racers ride — engine and class details, maintenance schedules, terrain-matched setup, and the parts that fit, all on one page. Pick your class by age below, then open any bike for the full rundown.
Pick your class by age
General amateur guidance — local club rules vary50cc
Ages 4–850cc 2-stroke (auto)
The first race bike — automatic clutch, no shifting. This is where most racers start.
65cc
Ages 7–1165cc 2-stroke
First bike with a clutch and gears. The real introduction to shifting and racing lines.
85cc
Ages 9–1585cc 2-stroke
Faster, taller minis. Big-wheel versions bridge the gap toward supermini.
Supermini
Ages 12–1685–112cc 2-stroke / up to 150cc 4-stroke
The hottest mini class — bigger bore and wheels right before moving to full-size.
125 / 250F (amateur)
Ages 12+125cc 2-stroke or 250cc 4-stroke
The jump to full-size bikes. A 125 two-stroke or a 250 four-stroke — the core amateur classes.
250F / 450 (pro / open)
Ages 16+250–450cc 4-stroke
Premier amateur and pro classes. The 450 is the top of the sport.
Most-ridden brands across the Midwest
17,278 riders with a bike on record · brand-level, from our results archive (not retail sales)Popular brands by state
Missouri
- 1. Honda1,120
- 2. Yamaha1,055
- 3. Kawasaki943
Kansas
- 1. Yamaha443
- 2. KTM400
- 3. Honda391
Iowa
- 1. Yamaha366
- 2. KTM339
- 3. Honda276
Nebraska
- 1. Honda41
- 2. Yamaha23
- 3. KTM23
Illinois
- 1. Yamaha1,119
- 2. KTM951
- 3. Kawasaki727
Minnesota
- 1. Yamaha530
- 2. KTM424
- 3. Honda241
Oklahoma
- 1. Yamaha295
- 2. KTM273
- 3. Husqvarna138
Arkansas
- 1. Yamaha34
- 2. KTM34
- 3. Honda20
The catalog
Yamaha
5,648 riders in our archiveYZ65
Motocross
Liquid-cooled 65cc two-stroke mini racer — the step up from 50s for the 7–10 class.
YZ85
Motocross
Classic 85 two-stroke — the proving ground for the supermini ranks.
YZ125
Motocross
The benchmark 125 two-stroke — light, revvy and a rider favorite for fun and 125 classes.
YZ250
Motocross
Big-bore two-stroke MX bike — torquey, simple to maintain, beloved in 250 2T classes.
YZ250F
Motocross
250 four-stroke MX workhorse — strong power and the app-tunable engine that defined the class.
YZ450F
Motocross
450 four-stroke MX flagship — big, smooth power with Yamaha Power Tuner app mapping.
YZ250FX
Off-Road / Cross-Country
Off-road 250F — wide-ratio gearbox, kickstand and tank for GNCC/hare scramble.
YFZ450R
Sport ATV
YFZ450R — the benchmark race quad, 450 four-stroke.
Honda
4,037 riders in our archiveCRF110F
Trail / Youth
Air-cooled automatic-clutch 110 — the go-to first trail bike for kids.
CRF125F
Trail / Youth
Bigger-wheel air-cooled trail four-stroke — easy, confidence-building step up.
CRF150R
Motocross
Liquid-cooled 150 four-stroke mini racer — the four-stroke option in the mini class.
CRF250R
Motocross
Honda’s 250 four-stroke MXer — nimble handling and strong top-end.
CRF450R
Motocross
450 four-stroke flagship — class-leading chassis feel and broad power.
CRF250RX
Off-Road / Cross-Country
Cross-country 250F — off-road tuning, larger tank and softer suspension.
TRX450R
Sport ATV
TRX450R — long-running race quad favorite.
Kawasaki
3,534 riders in our archiveKX65
Motocross
65 two-stroke mini — a staple of the youth motocross gate.
KX85
Motocross
85 two-stroke — proven mini-class racer.
KX112
Motocross
112cc supermini two-stroke — the extra cc that rules the supermini class.
KX250
Motocross
Kawasaki 250 four-stroke MXer — strong, with finger-adjustable clutch/brake levers.
KX450
Motocross
KX450 — championship-pedigree 450 four-stroke with hydraulic clutch.
Suzuki
1,572 riders in our archiveRM85
Motocross
RM85 two-stroke mini — affordable, simple entry into 85 racing.
RM-Z250
Motocross
RM-Z250 — famously sharp-cornering 250 four-stroke chassis.
RM-Z450
Motocross
RM-Z450 — strong-cornering 450 four-stroke, a value pick in the class.
KTM
5,084 riders in our archive50 SX
Motocross
Liquid-cooled 50 two-stroke auto — dominant first race bike for 4–8 year olds.
65 SX
Motocross
65 SX — the most common 65 on Midwest mini gates.
85 SX
Motocross
85 SX two-stroke — strong mini-class contender with big-wheel option.
125 SX
Motocross
125 SX — modern fuel-injected 125 two-stroke MXer.
250 SX-F
Motocross
250 SX-F — high-revving Austrian 250 four-stroke, electric start.
350 SX-F
Motocross
350 SX-F — the unique 350 class split: 250-like agility with more punch.
450 SX-F
Motocross
450 SX-F — light, powerful 450 four-stroke flagship.
250 SX
Motocross
250 SX — fuel-injected big-bore two-stroke MXer.
Husqvarna
1,440 riders in our archiveTC125
Motocross
TC125 — Husqvarna’s 125 two-stroke MXer (KTM-group platform).
FC250
Motocross
FC250 — 250 four-stroke MXer with Husqvarna styling and airbox.
FC350
Motocross
FC350 — the 350 middleweight four-stroke.
FC450
Motocross
FC450 — 450 four-stroke flagship.
GasGas
943 riders in our archiveMC125
Motocross
MC125 — value-priced 125 two-stroke on the KTM-group platform.
MC250F
Motocross
MC250F — 250 four-stroke MXer, the value option of the Austrian trio.
MC450F
Motocross
MC450F — 450 four-stroke flagship at a sharper price.
Brand popularity reflects how many riders in our own race-results database are recorded on each make — an honest community signal, not manufacturer retail or registration sales data (which is proprietary). Our results sources record the bike make, not the model, so counts are brand-level. Specs shown are the figures we can verify; details we can’t confirm are left blank rather than guessed. Part links are Amazon searches for your model; MWR earns a small commission at no extra cost to you.