RPS 125S Youth Dirt Bikes

The RPS 125S Youth Dirt Bike is a powerful off-road machine designed for young riders ready to take on challenging terrains. This gas-powered dirt bike combines performance and durability, making it an ideal choice for youth dirt bikes enthusiasts. The RPS 125S Dirt Bike is designed for riders who crave power and agility in off-road environments. Unleash the thrill of off-road adventure with the RPS 125S Youth Dirt Bike! Featuring a powerful 125cc gas-powered engine and durable construction, this reliable dirt bike delivers exciting performance for young riders ages 10 and up. Built for off-road durability and designed for developing riders, the 125S offers the perfect blend of power, control, and value.

Ready for gas-powered adventure? Explore our powersports for kids 12+, compare with special deals on powersports, or discover children's powersports vehicles. For more options, check our RPS products collection.

Key Features

• Powerful 125cc 4-stroke air-cooled engine
• Gas-powered for extended riding time
• Durable construction for off-road reliability
• Top speed: approximately 35-40 mph
• 4 speed manual transmission - easy to operate
• Electric start for easy, reliable starting
• Front and rear disc brakes for reliable stopping power
• Rugged suspension for off-road terrain
• Knobby off-road tires for maximum traction
• Perfect for riders ages 10 and up

Specifications

DESCRIPTION	125S series
Engine Type	Single cylinder, air cooled, four stroke, horizontal machine
Displacement (ml)	124
Bore and Stroke (mm)	54x54
Compression Ratio	9:00:01
Max. Power (kw/r/min)	6.0kW/7500rpm
Max. Torque (N.m/r/min)	9.5N.m/5500rpm
Max. Speed (km/h)	80
Lubrication	Pressure, splash
Clutch Type	Manual 4 speed / wet
Ignition	CDI
Starting System	Kick Start
Transmission System	Chain
Front Brake	Disc
Front Brake	Disc
Front Tire	60/100-14
Rear Tire	80/100-10
Suspension	Shock
L*W*H (mm)	1770*780*1065
Seat Height (mm)	810
Wheelbase (mm)	1210
Min. Ground Clearance	190
Max. Capacity Weight (kg)	80
Engine Oil (L)	1
Fuel Tank Capacity (L)	6.1

RPS 125S Dirt bike blog Posts

Frequently Asked Questions

Frequently Asked Questions

What age is the RPS 125S Youth Dirt Bike suitable for?

The RPS 125S is designed for young riders ages 10 and up, making it perfect for kids and teenagers who have some riding experience and are ready for a more powerful dirt bike with enhanced performance capabilities. The 225 lb weight, 810mm (31.9 inch) seat height, and 35-40 MPH capability make it ideal for intermediate young riders ready to progress from smaller beginner bikes.

How fast does the RPS 125S go?

The RPS 125S with its 125cc (124cc actual displacement) gas-powered four-stroke engine can reach speeds of approximately 35-40 MPH (80 km/h maximum), delivering impressive performance suitable for young riders. The 6.0kW @ 7500rpm power output and 9.5N.m @ 5500rpm torque provide exciting speed while maintaining safety for youth riders ages 10+. Actual top speed depends on rider weight, terrain conditions, and maintenance.

Is the RPS 125S street legal?

No, the RPS 125S is designed for off-road use only. It should be ridden on private property, motocross tracks, trails, or designated off-road areas. It is not street legal and should not be ridden on public roads or highways. Always check local regulations and obtain necessary permissions before riding on any property.

What kind of engine does the RPS 125S have?

The RPS 125S features a reliable 124cc (125cc class) single cylinder, air-cooled, four-stroke horizontal gas-powered engine with 54x54mm bore and stroke, 9:1 compression ratio, CDI ignition, and pressure/splash lubrication. Four-stroke engines are quieter, more fuel-efficient, produce smoother power, and are easier to maintain than two-stroke engines. The engine uses regular unleaded gasoline and holds 1 liter of engine oil.

Is the RPS 125S automatic or manual transmission?

The RPS 125S features a manual 4-speed transmission with manual wet clutch and chain drive, making it great for young riders to learn proper gear shifting with a hand clutch. The kick start system teaches proper starting technique and builds essential riding skills. This helps riders develop progressively and prepares them for larger bikes in the future.

How much does the RPS 125S weigh?

The RPS 125S weighs 225 pounds, providing a solid, stable ride while still being manageable for young riders ages 10 and up. This weight contributes to excellent stability and control on trails, jumps, and rough terrain. The maximum capacity weight is 80 kg (176 lbs), making it suitable for most young riders in the target age range.

What is the seat height of the RPS 125S?

The RPS 125S features a seat height of 810mm (approximately 31.9 inches), which is youth-appropriate for riders ages 10 and up. The seat height allows most young riders in this age range to comfortably reach the ground while maintaining proper riding position. The 190mm (7.5 inch) ground clearance provides excellent obstacle clearance for off-road riding.

Does the RPS 125S have suspension?

Yes! The RPS 125S features front and rear shock suspension that absorbs bumps, jumps, and rough terrain impacts. The suspension provides better handling, comfort, and control for off-road riding on trails, motocross tracks, and challenging terrain. The suspension is tuned for youth riders and helps build confidence on varied terrain.

What kind of brakes does the RPS 125S have?

The RPS 125S is equipped with disc brakes on both front and rear wheels that provide excellent stopping power, control, and reliability, ensuring safe riding for young riders on various terrains. Disc brakes offer superior performance compared to drum brakes, with consistent stopping power in wet or muddy conditions.

What kind of tires does the RPS 125S have?

The dirt bike comes equipped with aggressive knobby off-road tires (60/100-14 front, 80/100-10 rear) designed for maximum traction on dirt, mud, gravel, sand, and challenging terrain. These tires provide excellent grip for trail riding, motocross, and off-road adventures. The tire sizes are optimized for youth riders and provide good balance between traction and maneuverability.

Is the RPS 125S good for beginners?

The RPS 125S is best suited for riders ages 10+ who have some dirt bike experience or are ready to progress from smaller 50cc or 70cc bikes. It's more powerful than beginner models, making it ideal for intermediate young riders who want to develop their skills. New riders should start on smaller bikes before moving up to the 125S. Consider taking a dirt bike riding course to learn proper techniques.

What maintenance does the RPS 125S require?

Regular maintenance includes oil changes (1 liter capacity), air filter cleaning and replacement, chain lubrication and tension adjustment, brake inspections and adjustments, tire pressure checks, spark plug replacement, valve adjustments, and periodic tune-ups. Four-stroke engines are reliable and easier to maintain than two-stroke engines (no oil/gas mixing required). Following the maintenance schedule in the owner's manual ensures long-lasting performance.

Does the RPS 125S require assembly?

Some assembly is required upon delivery. The RPS 125S arrives approximately 85-90% assembled. Assembly typically includes handlebar installation, wheel attachment, brake adjustments, chain tension check, and final safety inspections. Most parents can complete assembly with basic tools in 1-2 hours. Detailed step-by-step instructions are included with your purchase, or you can have a local shop assist.

What comes included with the RPS 125S?

Your RPS 125S includes the dirt bike, owner's manual with maintenance schedule, tool kit, necessary assembly hardware, MSO (Manufacturer's Statement of Origin), warranty information, and safety guidelines. Safety gear (helmet, goggles, gloves, boots, chest protector, pads) should be purchased separately. We strongly recommend full protective equipment for all young riders.

Is there a warranty on the RPS 125S?

Yes! The RPS 125S comes with a 12-month manufacturer's internal engine replacement parts warranty covering defects in materials and workmanship. We also offer aS.-based customer support. Contact our customer support team for specific warranty details and coverage information.

Can I save money on the RPS 125S?

Yes! We're currently offering $200 off the regular price of $1,199, bringing it down to just $999. Plus, enjoy

Can I return the RPS 125S if I'm not satisfied?

We want you to love your new dirt bike! We offer a If you're not completely satisfied with your RPS 125S for any reason, contact our customer support team within 30 days of delivery to initiate a return. Please review our complete return policy on our website or contact our customer support team for details.

What safety gear do you recommend for the RPS 125S?

We strongly recommend full safety gear for all young riders including a DOT-approved motocross or off-road helmet, goggles or face shield, gloves with grip protection, over-the-ankle motocross boots, chest protector, knee guards, elbow pads, and durable long-sleeve riding gear. Safety should always be the top priority for young riders. Learn more about dirt bike safety gear selection.

Is adult supervision required for the RPS 125S?

Yes, adult supervision is always required when children and teenagers are riding dirt bikes. Parents should ensure riders wear proper safety gear, ride in safe designated areas away from traffic and hazards, understand basic riding controls and safety rules, follow local laws and property owner permissions, and ride within their skill level. Consider enrolling young riders in youth dirt bike training courses.

What kind of fuel does the RPS 125S use?

The RPS 125S runs on regular unleaded gasoline (87 octane or higher). The 6.1 liter (approximately 1.6 gallon) fuel tank provides extended riding sessions. Four-stroke engines are fuel-efficient and don't require oil/gas mixing like two-stroke engines, making them easier to fuel and maintain. Simply fill with regular gas and go.

How is the fuel economy on the RPS 125S?

The 125cc four-stroke engine provides excellent fuel efficiency, typically achieving 60-80+ MPG depending on riding style and terrain. This allows for extended riding sessions on a single tank (6.1 liters). Actual fuel economy depends on riding style, terrain, and maintenance. The efficient engine means less time refueling and more time riding.

Can my child grow into the RPS 125S?

Absolutely! The RPS 125S is designed for riders ages 10 and up and can accommodate growing teenagers. The 810mm seat height and 80 kg weight capacity provide room to grow. It's a great intermediate bike that provides several years of use as young riders develop their skills and grow physically. Many riders use 125cc bikes from age 10 through their mid-teens.

What terrain can the RPS 125S handle?

The RPS 125S with its shock suspension, knobby off-road tires, and 190mm ground clearance can handle dirt trails and paths, motocross tracks, gravel roads, grass and fields, hills and inclines, sand and mud, forest trails, and challenging off-road terrain. It's built for adventure, exploration, and developing riding skills on private property and designated off-road areas.

How does the RPS 125S compare to 50cc or 70cc bikes?

The 125S offers significantly more power (6.0kW vs. 2-3kW), speed (35-40 MPH vs. 25-30 MPH), and capability than 50cc or 70cc beginner bikes. It features better suspension, larger frame, disc brakes, and manual transmission for skill development. It's the natural progression for young riders who have outgrown smaller bikes and are ready for more performance and challenge.

Where can I get the RPS 125S serviced?

Most motorcycle shops, dirt bike dealers, and powersports repair centers can service the RPS 125S. Basic maintenance like oil changes, air filter replacement, and chain lubrication can also be performed by mechanically-inclined parents following the owner's manual. We provide lifetime technical support to assist with any questions or maintenance guidance.

Why choose the RPS 125S?

The RPS 125S offers an excellent combination of reliable 125cc gas-powered performance, quality construction, youth-appropriate design, kick start for skill building, manual transmission for learning, and exceptional value at just $999 (save $200). It's perfect for young riders ages 10+ who are ready to take their riding skills to the next level with a durable, capable dirt bike.

Is the RPS 125S durable enough for rough riding?

Yes! The RPS 125S is built with a durable frame and quality components designed to withstand the demands of off-road riding, jumps, and challenging terrain. With proper maintenance and care, it will provide years of reliable performance for developing riders. The robust construction can handle the abuse that comes with learning and progressing in dirt bike riding.

What colors is the RPS 125S available in?

The RPS 125S is currently available in Blue, Green, Red, and Orange color options, allowing young riders to choose a style that matches their personality. All colors feature the same specifications and performance. Check our in-stock inventory for current color availability.

How do I contact customer support about the RPS 125S?

Our customer support team is here to help with any questions about the RPS 125S, assembly instructions, riding tips, maintenance guidance, parts ordering, or technical support. We provide lifetime technical support for as long as you own the bike and real U.S.-based customer support via phone, email, or chat. Contact us through our website and we'll ensure your young rider has an amazing experience with their new dirt bike!

Is the RPS 125S currently in stock?

Yes! The RPS 125S Youth Dirt Bike is currently in stock in Blue, Green, Red, and Orange colors and ready to ship. in-stock inventory for current availability by color.

What's Include

🚚 anywhere in the United States

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🛠️ 12-Month Manufacturer's internal engine Replacement Parts Warranty

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📄 Free MSO/MCO Processing

🔧 Lifetime Technical Support for as long as you own the machine

🇺🇸 Real U.S.-Based Customer Support