Serving Orange County Since 2014Tue–Sat 9:00 AM – 6:00 PM · Walk-Ins Welcome

Mitas Ultra Heavy Duty Tubes

Ultra heavy-duty inner tubes from Mitas, fit by tire size.

3 fitments · 3 wheel sizes — from $20. Order online or install at MTC Orange County.

The Mitas Ultra Heavy Duty Tubes line covers 3 wheel sizes (18″–21″) across 3 fitments — for dual-sports, adventure bikes, and vintage iron, adventure and dirt bike fronts. The thickest-wall build for the hardest use — extreme off-road, racing, and heavy loads where a standard tube would pinch or overheat. Mitas states the wall thickness on this line: 4mm.

Find your fitment by the size printed on your tire sidewall (for example, a 90/100-18), pick the matching tube, and order it shipped or install it at MTC. Spoked wheels need a tube; if you're unsure, we'll confirm the right one.

Valve stems in this family: TR6. The stem has to clear your wheel, so match the code on the fitment you pick.

Sizes & Fitments3 fitments
FitsWheelValveStockPrice
100/100-18 – 140/80-180350-0873 · 4mm wall18TR6Order in$24.95
100/90-19 – 130/70-190350-0874 · 4mm wall19TR6Order in$21.95
2.50-21 – 100/80-210350-0875 · 4mm wall21TR6Order in$19.95

Valve stems in this family: TR6. The stem type must clear your wheel — match the code above, or call (714) 516-9059 and we’ll confirm it.

Tires that take this tubematched by size

Tube-type (spoked-wheel) tires we stock in sizes this family covers. Check your wheel — a cast wheel runs the same size tubeless and needs no tube.

MICHELIN Desert Race Baja
MICHELIN
Desert Race Baja

Michelin's purpose-built desert race tire — lighter, grippier in deep sand, and engineered for high-speed Baja-style competition.

Desert RacerSerious Desert ExplorerMixed-Surface Adventure Rider
View tire →8.2
MICHELIN Desert Race Baja

Michelin's purpose-built desert race tire — lighter, grippier in deep sand, and engineered for high-speed Baja-style competition.

The Desert Race Baja is built for one job — fast, deep-sand desert racing — and it does that job better than almost anything else on the market.

Best for
Desert RacerSerious Desert ExplorerMixed-Surface Adventure Rider
MICHELIN Desert Race
MICHELIN
Desert Race

Michelin's rally-raid-proven desert tire, DOT-certified for the road sections between epic off-road stages — built for serious adventure and competition riders.

Rally CompetitorRemote Adventure TourerStreet-Focused Adventure Rider
View tire →8.2
MICHELIN Desert Race

Michelin's rally-raid-proven desert tire, DOT-certified for the road sections between epic off-road stages — built for serious adventure and competition riders.

The Desert Race is purpose-built for rally competitors and remote adventure tourers who demand genuine off-road performance and can accept the trade-offs on pavement.

Best for
Rally CompetitorRemote Adventure TourerStreet-Focused Adventure Rider
MICHELIN Enduro Medium 2
MICHELIN
Enduro Medium 2

Michelin's versatile intermediate enduro tire built for mixed terrain — hardpack to loam, soft mud to rocky technical trails — with grip that holds up as miles accumulate.

Trail Versatility RiderEnduro RacerConditions-Specific Specialist
View tire →8.2
MICHELIN Enduro Medium 2

Michelin's versatile intermediate enduro tire built for mixed terrain — hardpack to loam, soft mud to rocky technical trails — with grip that holds up as miles accumulate.

Best suited for enduro and trail riders who tackle mixed terrain regularly and want a single tire that performs reliably from installation to the end of its life

Best for
Trail Versatility RiderEnduro RacerConditions-Specific Specialist
MICHELIN Enduro Xtrem
MICHELIN
Enduro Xtrem

Michelin's hard enduro-bred extreme off-road tire — built for technical terrain specialists who hit pavement only to get to the dirt.

Technical Trail SpecialistHard Enduro CompetitorBalanced Dual-Sport Rider
View tire →8.2
MICHELIN Enduro Xtrem

Michelin's hard enduro-bred extreme off-road tire — built for technical terrain specialists who hit pavement only to get to the dirt.

The Enduro Xtrem is purpose-built for serious dirt riders — if you're spending 70% or more of your saddle time off pavement in demanding conditions, this is your tire.

Best for
Technical Trail SpecialistHard Enduro CompetitorBalanced Dual-Sport Rider
DUNLOP Geomax EN91
DUNLOP
Geomax EN91

Dunlop's purpose-built enduro tire engineered for riders who race through sand, mud, and intermediate terrain without swapping rubber between stages.

Enduro RacerTrail ExplorerDual-Sport Commuter
View tire →8.2
DUNLOP Geomax EN91

Dunlop's purpose-built enduro tire engineered for riders who race through sand, mud, and intermediate terrain without swapping rubber between stages.

Best suited for enduro racers and serious trail riders who need one tire to handle varied dirt conditions across long, demanding rides.

Best for
Enduro RacerTrail ExplorerDual-Sport Commuter
DUNLOP Geomax MX14
DUNLOP
Geomax MX14

Dunlop's dedicated sand-and-mud motocross tire — built for riders who thrive where the track gets loose, deep, and unforgiving.

Sand & Mud SpecialistCompetitive Motocross RacerHard-Pack Track Rider
View tire →8.2
DUNLOP Geomax MX14

Dunlop's dedicated sand-and-mud motocross tire — built for riders who thrive where the track gets loose, deep, and unforgiving.

The MX14 is built for one job — dominating sand and mud — and it executes that mission better than nearly anything else in the motocross segment.

Best for
Sand & Mud SpecialistCompetitive Motocross RacerHard-Pack Track Rider
Geomax Enduro EN91EX
DUNLOP
Geomax Enduro EN91EX

Dunlop's hard enduro weapon — a super-soft gummy compound built for riders who need maximum traction on rocks, roots, and technical terrain, full stop.

Hard Enduro CompetitorTechnical Trail SpecialistGeneral Trail Rider
View tire →8.2
DUNLOP Geomax Enduro EN91EX

Dunlop's hard enduro weapon — a super-soft gummy compound built for riders who need maximum traction on rocks, roots, and technical terrain, full stop.

The EN91EX is purpose-built for serious hard enduro riders who put grip above all else and accept the wear trade-off that comes with it.

Best for
Hard Enduro CompetitorTechnical Trail SpecialistGeneral Trail Rider
METZELER MC360™ Mid-Hard
METZELER
MC360™ Mid-Hard

A competition-bred motocross tire engineered for hard-pack and intermediate terrain — built for riders who race, not just ride.

Competitive Motocross RacerDesert & Hard-Terrain Trail RiderSoft-Terrain Specialist
View tire →8.2
METZELER MC360™ Mid-Hard

A competition-bred motocross tire engineered for hard-pack and intermediate terrain — built for riders who race, not just ride.

The MC360 Mid-Hard is purpose-built for motocross racers and hard-terrain trail riders who need durable, consistent grip on compact and intermediate surfaces.

Best for
Competitive Motocross RacerDesert & Hard-Terrain Trail RiderSoft-Terrain Specialist
Similar Tubes
Mitas tubes — FAQ

What is an ultra heavy-duty tube for?

The thickest wall available — built for extreme off-road, racing, and heavy loads at very low pressure. Overkill for the street, essential when you're pushing a tire to its limits in the dirt.

How do I know which valve stem I need?

This family ships with TR6 stems, and the exact code is listed against every fitment in the table above. The stem must line up with the hole in your rim and clear the brake/sprocket side, so match the code on the tube to the one that came out of your wheel — or bring the wheel in and we'll check it.

Which tire sizes does one of these tubes cover?

Each row in the table above lists the manufacturer's own fitment range verbatim — many tubes cover several tire sizes on the same wheel diameter (for example a 3.25/4.10 tube fits both of those widths on its rim). Pick the row whose range includes the size printed on your sidewall.

Does MTC install Mitas tubes?

Yes — we mount and balance your tire and tube in-shop, or ship the tube to your door. Call (714) 516-9059 with your tire size and we'll pull the exact Mitas tube.