SKU: 77681216707

TrailMaster LK140 Pro Series Dirt Bike, Electric Start, 4-Speed Manual, Dual Disc Brakes, (17/14) Wheels

Sale price$719.55 Regular price$799.50
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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28

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Description

TrailMaster LK140 Pro Series Dirt Bike, Electric Start, 4-Speed Manual, Dual Disc Brakes, (17/14) WheelsPerfect for off road enthusiasts, the TrailMaster LK140 Pro Series Dirt Bike boasts a powerful Zhongshen 140cc 4 stroke engine that can be easily started with its innovative "ELECTRIC START" feature. With a sleek 32" seat height and a lightweight design of only 172lbs, this mid size dirt bike is available in a variety of colors including red, blue, green, and orange. Plus, its 4 speed manual transmission and front and rear dual disc brakes provide

Perfect for off-road enthusiasts, the TrailMaster LK140 Pro Series Dirt Bike boasts a powerful Zhongshen 140cc 4-stroke engine that can be easily started with its innovative "ELECTRIC START" feature. With a sleek 32" seat height and a lightweight design of only 172lbs, this mid-size dirt bike is available in a variety of colors including red, blue, green, and orange. Plus, its 4-speed manual transmission and front and rear dual disc brakes provide exceptional control, while the inverted front shock ensures a smooth ride.

The Pro-Series line offers extra premium features such as an Inverted front shock absorber, a Nitrogen air gas rear shock absorber with an aluminum linkage, a performance stainless steel muffler, alloy foldable handle levers, alloy rims and hubs, and high-quality front and rear disc brakes. This bike's full motocross ergonomics, race suspension system, and electronic CDI ignition allow for natural handling and effortless key and kick starting. Additionally, the CDI ignition ensures a smooth ride in all gears and a broad, even power band.

Specifications

Engine System

 Engine Type Yinxiang 140cc, Single cylinder, four stroke, air-cooling /Oil-cooling
Displacement 140 ml
Max Power 6.8/7500 (1±1.5%)
Max Torque 9.7/55001±1.5%
Compression Ratio 8.8:1
Shift Type Four gear, non-circulate gear 
Start Type Electric / Kick Start
Ignition CDI
Min. Fuel Consumption: ≤367g/kw.h
Minimum turning radius: 1900 mm
Lubricant Type # SF15W/40
Transmission: Chain Drive 

Size Data

Overall Size (L x W x H) 1780×740×1100 mm /69.42 x 28.86 x 42.9 Inch
Wheelbase 1210mm / 47.67  Inch
Seat Height 835mm / 32.89  Inch
Ground Clearance 340mm / 13.26  Inch
Fuel Capacity 6 L / 1.56 Gal.
Wheels Alloy 17/ 14 Rims, Alloy Hubs
Tires YUANXING  FT: 70/100-17 - RR: 90/100-14

Frame/Suspension/Brakes

Frame High quality Steel Frame
Front Fork Inverted, non-Adjustable  
Rear Shock Alloy U&D connector, Non-Adjustable
Upper and Lower Connecting Board Alloy
Handlebars Alloy and Foldable
Front Brake Disc
Rear Brake Disc
Exhaust Stainless

Packing and Loading

Packing Size 1370*440*660 mm / 53.43*17.16*25.74 Inch
N.W/LBS 78 KGS  / 171.6 LBS
G.W/LBS     103 KGS / 226.6 LBS
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 77681216707

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4.9 ★★★★★
Based on 18 reviews
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Product Reviews
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Verified Purchase
Travel A-Broads
Pawtucket, US
★★★★★ 5
Just What I Needed for My Home Office
Color: Black
I’ve been very happy with this office chair. It was straightforward to assemble, feels sturdy, and offers excellent support for long hours at my desk. The adjustable lumbar support, armrests, and headrest make it easy to customize for a comfortable fit, and the mesh design helps keep the chair breathable throughout the day. Overall, this chair is comfortable, ergonomic, and a great value for a home office setup.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
R
Verified Purchase
Rachel Harrell
Charlottesville, US
★★★★★ 5
Great chair for my gaming husband
Color: Black
My husband loves this chair. He is 6’ 4” and he has room in this chair. It is super comfortable and easy to put together. This chair is sturdy and worth every penny.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
L
Verified Purchase
Lgallegos
Alexandria, US
★★★★★ 4
OK for basic Office chair
Color: Black
Positives:Comfortable chair, decent lumbar support. Negatives: no height adjustment for seat or tilt. Handles spin to sides with the slightest touch. Will try to figure out how to securehandles in place. Period good entry level office chair, should have ordered more of an upgraded chair.
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Reviewed in the United States on April 19, 2026
J
Verified Purchase
Janis Giles
Louisville, US
★★★★★ 5
Great daily chair
Color: Black, Color: Black
This is a great chair and very comfortable. I'm hard on fabrics and the material is excellent for me. I didn't think I would like the headrest (because I've never had one), however, I enjoy it's use at times. The wheels roll very easily and the seat height is perfect. The seat is easy to keep clean. I've had this chair for 3 months with daily use and it looks brand new. I would buy this chair again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
A
Verified Purchase
Anonymous
Lowell, US
★★★★★ 3
Cheaply made but functional
Color: Black
Pros: The headrest is highly adjustable. Even if you're tall you'll likely be able to tilt it so that you can rest your head on it while reclining. The instructions for putting it together are easy to follow. It's perfectly serviceable as a desk chair with no glaring defects. The mesh material keeps your body cool and dry even when sitting in it all day. Cons It's obviously very lightweight and cheaply made. This does make the chair easier to move, but this doesn't really feel like a $180 chair at all. More like a $120 or even $100 chair. The chair back is attached to the chair seat by a plastic bracket. Nearly every desk chair I've had in the past has had their back attached to the bottom with a metal bracket, and even those start to bend out of shape after a year or so. While reclining a good portion of your weight will be resting on this plastic bracket, and I simply cannot see this cheap plastic lasting for very long supporting anyone's body weight over a long period of time. If you buy this chair, make sure to get the warranty. The armrests are closer together than on most chairs, which creates a claustrophobic feeling of being squeezed by them. You get used to it eventually, and you can just put the armrests up if you want to, but a way to adjust the armrest width would have been nice. The lumbar support doesn't really do anything at all. It only presses against my back at the most intense setting, and even then not very much. There is no incremental recline setting. Either you are fully reclined, or sitting fully upright. Luckily the full recline setting is about perfect for me, but for a $180 chair you'd expect a bit more settings here.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026

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