Trailmaster TM21 Dirt Bike 125cc - Semi Automatic 29.13-inch seat height Trailmaster Main Features: The all-new TM21 is the newest exciting off-road product from one of the industry's largest and most innovative companies Trailmaster. The TrailMaster dirt bike offers a superior frame design, improved suspension, and the industry longest 6 months/6,000 miles warranty on engine and transmission.  Trailmaster spared no expense in developing the outstanding TM line of dirt bikes.  Better components, better design, ease of maintenance all make this line of dirt bikes the #1 choice of Power Sports Professional.  This all-new dirt/pit bike brings together design features found on bikes that cost five times as much.  Features like Twin Spar Frame, oversized vented front and rear disk brakes, coil-over rear shocks,  and lightweight frame components.  This bike has plenty of power and is geared to give the young rider and great start in learning to ride the right way with a semi-automatic transmission  This • Powerful 125cc engine• Kick start automatic clutch, semi-automatic transmission • 41.54 “ wheelbase and 29.13” seat high• Front tire 14”/Rear Tire 12”• Hydraulic front and rear disc brakes• Aluminum handlebar CA customers: this item is NOT CARB approved, but you may use on your private land. Tech Specs Engine System  Engine Type ZM125cc, Single Cylinder, 4-Stroke, Air Cooled Displacement 124 ml Max Power 6.2(1±10%)/7000(1±5%) kw/r/min Max Torque 9.0(1±10%)/5000(1±5%) N.m/r/min Compression Ratio 9.6:1 Shift Type N-1-2-3-4, Four-Gears, Automatic Clutch Start Type Kick Start Ignition CDI Min. Fuel Consumpetion: ≤367g/kw.h Max Range: ≤10.5mile Engine Oil #: SJ5W一30 Transmission: Chain Drive; #428,14/41T Size Data Overall Size (L x W x H) 1530*730*1010MM /60.24"X28.74"X39.76" Wheel Base 41.54" Seat Height 29.13" Ground Clearance 10.63" Fuel Capacity 3.5 L/0.92 Gal. Wheels Steel 1.6 x 14" / 1.85 x 12" Rims, Cast Hubs Tires FT: 60/100-14 - RR: 80/100-12 Frame/Suspension/Brake system Frame Cradle Type Steel Tube Frame Front Fork Telescopic ¢33*650mm Forks, Non-Adjustable Rear Shock ¢10*270mm , Non-Adjustable Swing-Arm Steel Tube 12 inch Handle Bar Aluminium Crossbar ,L=28.35"; Dia=0.87" Front Brake Hydraulic Single Piston Caliper, 220mm Disc Rear Brake Hydraulic Single Piston Caliper, 190mm Disc Exhaust Steel Pipe with catalyst converter(EPA Standard) Packing and Loading Packing Size 54.5*14.8*30 inch N.W/LBS 134.5 LBS G.W/LBS 161 LBS   Warranty Our Company Warranty PoliciesYour satisfaction is our #1 goal. We strive to provide our customers with the highest level of customer service and support we can. We strongly suggest our customers read the following information thoroughly. If you have any questions about any of our or the manufacturers policies, please feel free to email us or call 1-877-667-6289.If you need parts at the bottom of our home page you will find “Parts Request or https://motobuys.com/pages/part-request = simply fill out the form and click submit.For Tech Support: https://motobuys.com/pages/technical-supports simply fill out the form and click submitTHE MANUFACTURERS WARRANTY COVERS PARTS, ENGINE ONLY FOR ALL PRODUCTS AS FOLLOWS:OFF ROAD: ATV'S, UTV'S, BUGGIES, GO CARTS AND DIRT BIKES offer 3 MONTHS PARTS, 6 MONTHS ENGINE WARRANTY, MOTOBUYS.com will supply new or rebuilt replacement parts in exchange for defective parts for a period of 3(three) months, as well defective engines for a period of 6(six) months from the date of purchase at no charge.Buyers will need basic repair & basic setup skills such as using tools; replacing nuts & bolts, filters, light bulbs, fluids, adjustments, etc. If you don’t have this ability we suggest using a mechanic to assist you with your needs. Our tech support Hotline is available to assist you.THIS LIMITED WARRANTY COVERS THE FOLLOWING PARTS ONLY:ENGINE: All internal lubricated parts, i.e. Pistons, piston rings, piston pins, connecting rods, rod bearings, camshaft, camshaft bearings, timing chain, crankshaft, crankshaft main bearings, oil pump, water pump, valves, valve springs, valve guides, valve seats, valve lifters and valve push rods. Additionally, the engine head and cylinder will only be covered if damage is caused solely as a result of the mechanical failure of one or more internal lubricated components listed above. (Broken gears any damage from outside impacted is not covered warranty)ENGINE CASE: The Engine case itself will only be covered if the damage caused was solely as a result of the mechanical failure of one or more of the internal lubricated components listed above. (Broken gears any damage from outside impact is not covered warranty)DRIVE SYSTEM: All internal lubricated parts contained within the drive axle housing case, i.e. differential, differential gears, drive shaft, drive axles, CV joints, axle bearings, reverse gears and output shafts. The drive axle housing as well as the reverse gearbox housing, if damaged solely as a result of the mechanical failure of one or more or the internal lubricated components contained the drive axle housing will be covered. (Any bent, broken, or damage by outside impact is not covered warranty)FUEL SYSTEM: For carburated vehicles; Carburetor, vacuum fuel pump, intake manifold, fuel tank and fuel petcock. For fuel injected vehicles; Fuel injectors, fuel pump, fuel rail and fuel pressure regulator.ELECTRICAL: Stator, stator pickup, magneto, voltage regulator\ rectifier, CDI, starter relay\ starter solenoid, starter motor, coil, distributor assembly and injector relay.COOLING SYSTEM: Radiator, radiator cap, thermostat, thermostat housing, temperature indicator switch, cooling fan motors; water pump and water pump housing.BRAKES: Calipers, drum housings, drum brake linkage, reservoirs, rotors, and lines.CHASSIS: Frame, swing arms, A-arms, steering controls, (if not caused by jumping or impact.)TRANSMISSION (Automatic or Standard): All internal lubricated parts contained within the transmission case, i.e. flywheel, hydraulic shift linkage, kick start spindle, kick start secondary gear and transmission gears. The transmission case itself will be covered if the damage was solely as a result of mechanical failure of one or more of the internal lubricated components contained within the transmission case. (Improper shifting of gears by not coming to stop complete can cause damage to internal gears. (""This cause is not covered warranty"")WHAT IS NOT COVERED: The following is a list of items not covered by the warranty policy. This list is not all inclusive and may be modified at any time. Batteries, Belts, Brakes and Brake Pads, Chains, Clutch, Foot peg mount, Hand Levers, Hoses, Lights, Mirrors, Plastic Body, Seats, Shocks, Spark Plugs, Tires, Transmission.COVERAGE AND LIMITATIONS: Initial assembly and preparation must be preformed in accordance with the Consumer Motor Vehicle Delivery Preparation and Inspection Form that is provided by the manufacturer. Additionally, all work must be performed by a professional mechanic (i.e. engine repair shop, motorcycle shop, or local auto repair shop) or an authorized Dealer of the manufacturer to assure your vehicle is in good working condition. Upon completion, you must mail in the Consumer Motor Vehicle Delivery Preparation and Inspection Form signed by the technician that performed the service. You will need to provide proof of this service when filing a warranty claim, so (end user) must keep your receipts. Subject to the limitations stated in this agreement,MOTOBUYS.com agrees (at its sole discretion) to replace a covered component if the covered component fails as a result of one or more of the internal lubricated parts within the component stated warranty period from the date of purchase, while the component has been used under the conditions and in the manner specified by its original manufacturer. Keep in mind these off-road units are built for recreational use only. Your claim may be denied under the following circumstances:Misuse or abuse of the vehicle, i.e.JumpingStunt ridingModification of any kindRacingRiding at constant wide open throttle (over revving the engine)Unit is used as a rentalDamage is caused by an accidentProduct is used in a manner that it is not designed forRider abuseImproper adjustment\operation of the clutch, i.e. dragging, causing premature burning of thefriction platesImproper adjustment\operation of brakes. Driving with parking brake on.Improper gear engagement, i.e. engaging reverse will moving forwardImproper maintainance, i.e.Lack of routine maintenanceRepairs performed improperly,Use of incorrect lubricantsImproper initial set upUse of aftermarket parts for repairThe following items are not covered: Tires, rims, body panels, fuses, forks, shocks, gaskets, light bulbs, seats, CV Boots, oil filter, air filter, fuel filter, filters, clutch wear parts, cables, drive belt, chain, spark plug, any part made from rubber, belts, brake linings and/or pads, batteries, sprockets, external springs, clips, nuts, bolts and fasteners.HANDLING OF WARRANTY CLAIMS:FOR PARTS: All Parts warranty issues must be processed through https://motobuys.com/pages/part-request  or if directed by the manufacturer. You must produce a copy of your original invoice showing the model number, vehicle identification number and date of purchase on the invoice, as well as a copy of your Consumer Motor Vehicle Delivery Preparation and Inspection Form to warranty your product directly. All defective parts must be returned to MOTOBUYS.com or the manufacturer as directed for inspection and verification of defect. MOTOBUYS.com reserves the right to decline any warranty claim based on the criteria listed in the COVERAGE AND LIMITATIONS portion of this warranty.FOR ENGINES: All Engine warranty issues must be processed through MOTOBUYS.com or if directed through the manufacturer of the unit purchased. In ether case, after obtaining an RMA number from MOTOBUYS.com, you will be provided with a return shipping label. The motor must be removed from the vehicle, safely packaged and shipped to our repair facility located at the address listed on the shipping label. MOTOBUYS.com or the manufacturer reserves the right to decline any warranty claim based on the criteria listed in the COVERAGE AND LIMITATIONS portion of this warranty. Documents [TM-21 Brochure] [Check starting motor] [Inspect engine] [Inspect fuel supply]

Trailmaster TM21 Dirt Bike 125cc - Semi Automatic 29.13-inch seat height

Trailmaster TM21 Dirt Bike 125cc - Semi Automatic 29.13-inch seat height
MSRP: $1,089.00
SAVE:$221.00
$868.00
Free Shipping
In Stock

Tax Refund Sale | Buy More Save More

Spend $1,000, save $25 with [SAVE25]

Spend $2,000, save $50 with [SAVE50]

Spend $3,000, save $100 with [SAVE100]

Spend $5,000, save $200 with [SAVE200]

Buy 2 and more Trailmaster Dirt Bikes, SAVE $50 each with code BUYMOREBIKE

except TM-10/TM-11

*except large items requiring special delivery.

Main Features:

The all-new TM21 is the newest exciting off-road product from one of the industry's largest and most innovative companies Trailmaster. The TrailMaster dirt bike offers a superior frame design, improved suspension, and the industry longest 6 months/6,000 miles warranty on engine and transmission.  Trailmaster spared no expense in developing the outstanding TM line of dirt bikes.  Better components, better design, ease of maintenance all make this line of dirt bikes the #1 choice of Power Sports Professional. 

This all-new dirt/pit bike brings together design features found on bikes that cost five times as much.  Features like Twin Spar Frame, oversized vented front and rear disk brakes, coil-over rear shocks,  and lightweight frame components.  This bike has plenty of power and is geared to give the young rider and great start in learning to ride the right way with a semi-automatic transmission 

This 
• Powerful 125cc engine
• Kick start automatic clutch, semi-automatic transmission 
• 41.54 “ wheelbase and 29.13” seat high
• Front tire 14”/Rear Tire 12”
• Hydraulic front and rear disc brakes
• Aluminum handlebar

CA customers: this item is NOT CARB approved, but you may use on your private land.

Main Features:

The all-new TM21 is the newest exciting off-road product from one of the industry's largest and most innovative companies Trailmaster. The TrailMaster dirt bike offers a superior frame design, improved suspension, and the industry longest 6 months/6,000 miles warranty on engine and transmission.  Trailmaster spared no expense in developing the outstanding TM line of dirt bikes.  Better components, better design, ease of maintenance all make this line of dirt bikes the #1 choice of Power Sports Professional. 

This all-new dirt/pit bike brings together design features found on bikes that cost five times as much.  Features like Twin Spar Frame, oversized vented front and rear disk brakes, coil-over rear shocks,  and lightweight frame components.  This bike has plenty of power and is geared to give the young rider and great start in learning to ride the right way with a semi-automatic transmission 

This 
• Powerful 125cc engine
• Kick start automatic clutch, semi-automatic transmission 
• 41.54 “ wheelbase and 29.13” seat high
• Front tire 14”/Rear Tire 12”
• Hydraulic front and rear disc brakes
• Aluminum handlebar

CA customers: this item is NOT CARB approved, but you may use on your private land.

Engine System
 Engine Type ZM125cc, Single Cylinder, 4-Stroke, Air Cooled
Displacement 124 ml
Max Power 6.2(1±10%)/7000(1±5%) kw/r/min
Max Torque 9.0(1±10%)/5000(1±5%) N.m/r/min
Compression Ratio 9.6:1
Shift Type N-1-2-3-4, Four-Gears, Automatic Clutch
Start Type Kick Start
Ignition CDI
Min. Fuel Consumpetion: ≤367g/kw.h
Max Range: ≤10.5mile
Engine Oil #: SJ5W一30
Transmission: Chain Drive; #428,14/41T
Size Data
Overall Size (L x W x H) 1530*730*1010MM /60.24"X28.74"X39.76"
Wheel Base 41.54"
Seat Height 29.13"
Ground Clearance 10.63"
Fuel Capacity 3.5 L/0.92 Gal.
Wheels Steel 1.6 x 14" / 1.85 x 12" Rims, Cast Hubs
Tires FT: 60/100-14 - RR: 80/100-12
Frame/Suspension/Brake system
Frame Cradle Type Steel Tube Frame
Front Fork Telescopic ¢33*650mm Forks, Non-Adjustable
Rear Shock ¢10*270mm , Non-Adjustable
Swing-Arm Steel Tube 12 inch
Handle Bar Aluminium Crossbar ,L=28.35"; Dia=0.87"
Front Brake Hydraulic Single Piston Caliper, 220mm Disc
Rear Brake Hydraulic Single Piston Caliper, 190mm Disc
Exhaust Steel Pipe with catalyst converter(EPA Standard)
Packing and Loading
Packing Size 54.5*14.8*30 inch
N.W/LBS 134.5 LBS
G.W/LBS

161 LBS

 

Our Company Warranty Policies
Your satisfaction is our #1 goal. We strive to provide our customers with the highest level of customer service and support we can. We strongly suggest our customers read the following information thoroughly. If you have any questions about any of our or the manufacturers policies, please feel free to email us or call 1-877-667-6289.
If you need parts at the bottom of our home page you will find “Parts Request or https://motobuys.com/pages/part-request = simply fill out the form and click submit.
For Tech Support: https://motobuys.com/pages/technical-supports simply fill out the form and click submit
THE MANUFACTURERS WARRANTY COVERS PARTS, ENGINE ONLY FOR ALL PRODUCTS AS FOLLOWS:
OFF ROAD: ATV'S, UTV'S, BUGGIES, GO CARTS AND DIRT BIKES offer 3 MONTHS PARTS, 6 MONTHS ENGINE WARRANTY, MOTOBUYS.com will supply new or rebuilt replacement parts in exchange for defective parts for a period of 3(three) months, as well defective engines for a period of 6(six) months from the date of purchase at no charge.
Buyers will need basic repair & basic setup skills such as using tools; replacing nuts & bolts, filters, light bulbs, fluids, adjustments, etc. If you don’t have this ability we suggest using a mechanic to assist you with your needs. Our tech support Hotline is available to assist you.
THIS LIMITED WARRANTY COVERS THE FOLLOWING PARTS ONLY:
ENGINE: All internal lubricated parts, i.e. Pistons, piston rings, piston pins, connecting rods, rod bearings, camshaft, camshaft bearings, timing chain, crankshaft, crankshaft main bearings, oil pump, water pump, valves, valve springs, valve guides, valve seats, valve lifters and valve push rods. Additionally, the engine head and cylinder will only be covered if damage is caused solely as a result of the mechanical failure of one or more internal lubricated components listed above. (Broken gears any damage from outside impacted is not covered warranty)
ENGINE CASE: The Engine case itself will only be covered if the damage caused was solely as a result of the mechanical failure of one or more of the internal lubricated components listed above. (Broken gears any damage from outside impact is not covered warranty)
DRIVE SYSTEM: All internal lubricated parts contained within the drive axle housing case, i.e. differential, differential gears, drive shaft, drive axles, CV joints, axle bearings, reverse gears and output shafts. The drive axle housing as well as the reverse gearbox housing, if damaged solely as a result of the mechanical failure of one or more or the internal lubricated components contained the drive axle housing will be covered. (Any bent, broken, or damage by outside impact is not covered warranty)
FUEL SYSTEM: For carburated vehicles; Carburetor, vacuum fuel pump, intake manifold, fuel tank and fuel petcock. For fuel injected vehicles; Fuel injectors, fuel pump, fuel rail and fuel pressure regulator.
ELECTRICAL: Stator, stator pickup, magneto, voltage regulator\ rectifier, CDI, starter relay\ starter solenoid, starter motor, coil, distributor assembly and injector relay.
COOLING SYSTEM: Radiator, radiator cap, thermostat, thermostat housing, temperature indicator switch, cooling fan motors; water pump and water pump housing.
BRAKES: Calipers, drum housings, drum brake linkage, reservoirs, rotors, and lines.
CHASSIS: Frame, swing arms, A-arms, steering controls, (if not caused by jumping or impact.)
TRANSMISSION (Automatic or Standard): All internal lubricated parts contained within the transmission case, i.e. flywheel, hydraulic shift linkage, kick start spindle, kick start secondary gear and transmission gears. The transmission case itself will be covered if the damage was solely as a result of mechanical failure of one or more of the internal lubricated components contained within the transmission case. (Improper shifting of gears by not coming to stop complete can cause damage to internal gears. (""This cause is not covered warranty"")


WHAT IS NOT COVERED: The following is a list of items not covered by the warranty policy. This list is not all inclusive and may be modified at any time. Batteries, Belts, Brakes and Brake Pads, Chains, Clutch, Foot peg mount, Hand Levers, Hoses, Lights, Mirrors, Plastic Body, Seats, Shocks, Spark Plugs, Tires, Transmission.
COVERAGE AND LIMITATIONS: Initial assembly and preparation must be preformed in accordance with the Consumer Motor Vehicle Delivery Preparation and Inspection Form that is provided by the manufacturer. Additionally, all work must be performed by a professional mechanic (i.e. engine repair shop, motorcycle shop, or local auto repair shop) or an authorized Dealer of the manufacturer to assure your vehicle is in good working condition. Upon completion, you must mail in the Consumer Motor Vehicle Delivery Preparation and Inspection Form signed by the technician that performed the service. You will need to provide proof of this service when filing a warranty claim, so (end user) must keep your receipts. Subject to the limitations stated in this agreement,
MOTOBUYS.com agrees (at its sole discretion) to replace a covered component if the covered component fails as a result of one or more of the internal lubricated parts within the component stated warranty period from the date of purchase, while the component has been used under the conditions and in the manner specified by its original manufacturer. Keep in mind these off-road units are built for recreational use only. Your claim may be denied under the following circumstances:
Misuse or abuse of the vehicle, i.e.
Jumping
Stunt riding
Modification of any kind
Racing
Riding at constant wide open throttle (over revving the engine)
Unit is used as a rental
Damage is caused by an accident
Product is used in a manner that it is not designed for
Rider abuse
Improper adjustment\operation of the clutch, i.e. dragging, causing premature burning of the
friction plates
Improper adjustment\operation of brakes. Driving with parking brake on.
Improper gear engagement, i.e. engaging reverse will moving forward
Improper maintainance, i.e.
Lack of routine maintenance
Repairs performed improperly,
Use of incorrect lubricants
Improper initial set up
Use of aftermarket parts for repair
The following items are not covered: Tires, rims, body panels, fuses, forks, shocks, gaskets, light bulbs, seats, CV Boots, oil filter, air filter, fuel filter, filters, clutch wear parts, cables, drive belt, chain, spark plug, any part made from rubber, belts, brake linings and/or pads, batteries, sprockets, external springs, clips, nuts, bolts and fasteners.
HANDLING OF WARRANTY CLAIMS:
FOR PARTS: All Parts warranty issues must be processed through https://motobuys.com/pages/part-request  or if directed by the manufacturer. You must produce a copy of your original invoice showing the model number, vehicle identification number and date of purchase on the invoice, as well as a copy of your Consumer Motor Vehicle Delivery Preparation and Inspection Form to warranty your product directly. All defective parts must be returned to MOTOBUYS.com or the manufacturer as directed for inspection and verification of defect. MOTOBUYS.com reserves the right to decline any warranty claim based on the criteria listed in the COVERAGE AND LIMITATIONS portion of this warranty.
FOR ENGINES: All Engine warranty issues must be processed through MOTOBUYS.com or if directed through the manufacturer of the unit purchased. In ether case, after obtaining an RMA number from MOTOBUYS.com, you will be provided with a return shipping label. The motor must be removed from the vehicle, safely packaged and shipped to our repair facility located at the address listed on the shipping label. MOTOBUYS.com or the manufacturer reserves the right to decline any warranty claim based on the criteria listed in the COVERAGE AND LIMITATIONS portion of this warranty.

Compare with similar items

Frequently Asked Questions

Check more frequently asked questions here. If you still need help, then please contact us at info@motobuys.com.

Customer Reviews

Based on 11 reviews
100%
(11)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
Y
Yvette C.
“Best Christmas gift ever” ~11 year old

We needed to upgrade my son’s 30 mph dirt bike with a bigger one; he out grew it. I was worried the Trailmaster TM21 was going to be too big/heavy for him, it’s the perfect size. My son is about 4’8” tall and weighs less than 100 lbs. He is able to control this dirt bike very well. He was new to the shifting but with the help of this mom (scared ****less) I was able to demonstrate the shift system. My son is a fast learner and now he looks like a pro. He has been riding up and down our street since Christmas. I’m very happy with this purchase and received the dirt bike assembled. We weren’t home when they delivered but through great communication with dispatch, the driver waited for my husband to get home. I’m very pleased with this company and I would definitely order again when the kid outgrows this dirt bike.

J
Jim M.
Arrived Quickly

The bike arrived quickly and has no shipping damage. It is a Christmas gift, and my grandson is going to help assemble then for the experience. I'll get back once it's running and check out.

M
Marty F.
Everything went very well.

Everything went very well.

K
Kenzo I.
Very good

Very good but there needs to be a little improvement on the instructions on how to assemble the bike when it arrives.

L
Lou-Ann Z.
Excellent bike I purchased

I give it a good rating, I love my dirt bike and only things I didn’t like about ordering online is my card couldn't go through but one single phone call was good.

M
Maya R.
keep up the great service guys....

I had a great experience, I was very impressed by the level of customer service, even when I called to check if my order was shipped, the gentleman that answer the phone already new my name and why I'm calling I guess based on the caller ID. i didn't even need to ask my question. he said my order was shipped and and should arrive in 2 days. which it did arrive the next day. I will shop again and would recommend them to others.

G
Ga�l B.
highly recommend

Customer service is great and really helping and not trying to get off the phone with you. The 125cc pit dirt bike is a great bike, I would highly recommend, thanks Charlie

L
Lorenzo W.
Fast ship

Fast ship great little bike

Your Recently Viewed Products