2026 Thumpstar TSF 150 X3 Trail Bike

Go Further. Ride Longer.

2026 THUMPSTAR TSF 150 X3

The 2026 Thumpstar TSF 150 X3 is a capable 150cc trail bike built for riders looking to step into a larger, more serious off-road machine without jumping all the way to a full-size 250cc dirt bike.

Powered by Thumpstar's 150cc TY four-stroke engine and paired with a 5-speed manual transmission, the TSF 150 delivers smooth, usable power for trail riding and off-road adventures. Electric start makes getting going easy, while the balanced X3 chassis keeps the bike nimble and manageable on tighter trails.

The TSF 150 X3 is equipped with VS1 inverted front forks and progressive linkage rear suspension designed to provide a comfortable, controlled ride over rough and technical terrain.

Lightweight alloy wheels feature cast aluminum hubs, large bearings and stainless steel spokes for added strength and reliability. Powerful front and rear hydraulic disc brakes provide confident stopping performance, while the 17-inch front and 14-inch rear wheel combination gives the TSF 150 a versatile trail-bike stance.

An updated airbox with dual-layer filtration, waterproof electrical connectors, heavy-duty wiring, stainless steel footpegs and Thumpstar's 25mm Lockheed-style rear axle round out a trail bike designed to handle real off-road riding.

Whether you're exploring trails, riding the property or stepping up from a smaller pit bike, the TSF 150 X3 offers a great combination of manageable size, capable suspension and true trail-bike performance.

150CC. 5 SPEEDS. ENDLESS TRAILS.

SPECIFICATIONS

ENGINE & TRANSMISSION

• Engine: TY 150cc 4-Stroke
• Transmission: 5-Speed Manual (1-N-2-3-4-5)
• Starting System: Electric Start
• Carburetion: PE 28mm
• Exhaust: Pipe Bomb Exhaust System
• Final Drive: 520 Chain
• Fuel Capacity: 6.3 Litres

SUSPENSION

• Front: VS1 Inverted Forks 850mm
• Rear: 450mm Monoshock with Linkage

BRAKES

• Front: 260mm Disc / Dual-Piston Caliper
• Rear: 240mm Disc / Single-Piston Caliper

WHEELS & TIRES

• Front: 17" Alloy Wheel
• Rear: 14" Alloy Wheel / 90/100-14 Tire
• Alloy Rims
• Cast Aluminum Hubs
• Stainless Steel Spokes
• 25mm Lockheed-Style Rear Axle

DIMENSIONS

• Seat Height: 850mm / Approx. 33.5"
• Wheelbase: 1,330mm / Approx. 52"
• Net Weight: 103kg / Approx. 227 lb
• Fuel Capacity: 6.3L

TRAIL-READY FEATURES

150CC FOUR-STROKE POWER

The TY 150cc four-stroke engine is designed to provide reliable, usable power for trail riding, paired with a 5-speed manual transmission for greater control across changing terrain.

ELECTRIC START

Get riding with the convenience of electric start — especially handy when restarting on the trail.

VS1 INVERTED FRONT FORKS

Thumpstar's VS1 inverted forks feature updated valving and triple clamps designed to provide a smooth, controlled ride while maintaining stability on more technical trails.

LINKAGE REAR SUSPENSION

Updated X3 linkage geometry provides progressive rear suspension performance to help keep the bike comfortable and controlled over rough terrain.

17"/14" TRAIL WHEELS

The larger 17-inch front and 14-inch rear wheel combination gives the TSF 150 added capability over rough terrain while maintaining the nimble feel of a smaller trail bike.

HYDRAULIC DISC BRAKES

A 260mm front disc with dual-piston caliper and 240mm rear disc provide strong, predictable braking performance.

LIGHTWEIGHT ALLOY WHEELS

Alloy rims, cast aluminum hubs, large bearings and stainless steel spokes combine strength and reliability while keeping unnecessary rotating weight down.

UPDATED AIRBOX

A dual-layer caged air filter and stainless mesh filter help protect the engine from dust, dirt and debris without unnecessarily restricting airflow.

WATERPROOF ELECTRONICS

Heavy-duty multi-core wiring, sturdy connectors and waterproof plugs help protect critical electrical components i