MIR RACING GP12 155 adult gasoline pocket bike

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Ft1,461,573.57

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Restocking in progress, pre-order available

Product info

Experience pure adrenaline with the MIR RACING GP12 155, a true racing machine. This gas-powered adult pocket bike, equipped with a 16 hp Zongshen engine and manual gearbox, turns every corner into an intense, professional riding experience. Combining premium design, high-precision chassis, and Formula-style braking, it guarantees total control and absolute safety on the track. Trust XtremRS expertise: our technicians rigorously prepare each machine, offering personalized advice and a 2-year warranty for unparalleled riding peace of mind.

MIR

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Product details

The heart of your gas-powered adult pocket bike: the Zongshen 155cc engine

Powered by a 155cc Zongshen engine developing 16 hp (11.93 kW), this gas-powered adult pocket bike offers linear and usable power, ideal for taking your track riding skills to the next level. The legendary reliability of this 4-stroke single-cylinder engine ensures extended riding sessions without excessive overheating, provided you follow the manufacturer's recommended oil change intervals. At XtremRS, we check every engine before shipping and remain at your disposal to guide you in choosing the right 10W-40 oil for intensive competition use.

A 4-speed manual gearbox to master your gas-powered adult pocket bike

Switching to a 4-speed manual transmission transforms your riding experience: you manage engine speed with precision, learn to handle the foot shifter and hand clutch, which are essential fundamentals for moving up to higher engine capacities. The gear ratios have been designed to make the most of the Zongshen power band, offering vigorous acceleration out of tight corners as well as sufficient top speed on straightaways. Remember to check the clutch control play and gearbox oil level during each maintenance session to preserve smooth gear shifting.

Tubular chassis and aluminum swingarm: the rigor of a racing gas-powered adult pocket bike

The GP20 painted tubular steel frame ensures controlled torsional rigidity, guaranteeing stability during fast cornering and accurate feedback to the rider. Combined with a CNC-machined aluminum swingarm, the assembly reduces unsprung weight for increased traction and instant lean-in. The ultra-light 12-inch wheels complete this high-performance chassis by reducing the gyroscopic effect. This architecture, directly derived from racing, requires regular checks of wheel alignment and swingarm axle tightness—points that our XtremRS technicians monitor during pre-delivery preparation.

MIR Racing and DNM/Gubellini suspension: precise handling for your gas-powered adult pocket bike

Up front, the MIR Racing fork offers fine adjustment of preload and hydraulics to suit your body weight and track conditions. At the rear, the DNM or Gubellini shock absorber (depending on factory availability) provides progressive rear-end support, essential for traction out of corners and braking stability. The optional Andreani cartridges (+799 €) take this performance to the next level with complete compression/rebound separation. We recommend an annual hydraulic fluid flush and sag adjustment before each track day; our technical service is here to help you set up your suspension.

Formula and MIR Racing braking: active safety for your gas-powered adult pocket bike

The front brake, entrusted to Formula (master cylinder and caliper), delivers immediate biting power and millimeter-precise modulation, making it a motorcycle racing benchmark for resistance to thermal fade. The MIR Racing rear caliper ensures directional stability without the risk of accidental lock-up. This high-end duo requires the use of a competition-grade DOT 4 brake fluid, which should be bled before each season to prevent any spongy feel. Check pad thickness at every session; XtremRS stocks replacement pads and discs so your testing program is never interrupted.

1. What type of rider is this MIR Racing GP12 155cc intended for?

With its 155cc Zongshen engine developing 16 hp, 4-speed manual gearbox, and GP20 steel tubular chassis paired with a CNC aluminum swingarm, this machine is designed for riders looking to progress seriously. It is a true gas-powered adult pocket bike, built for learning chassis tuning and circuit riding, far beyond mere occasional leisure use.

2. What are the exact engine and transmission specifications?

The power plant is a 155cc 4-stroke Zongshen engine delivering 16 hp (11.93 kW), coupled with a 4-speed manual gearbox. This architecture allows you to work on engine speed and engine braking, which are key points for developing sports riding skills, without electronic assistance or a CVT transmission.

3. Are the chassis and cycle parts adjustable or upgradeable?

The GP20 painted steel tubular chassis offers the necessary rigidity for track use, while the CNC aluminum swingarm ensures precision and lightness. Front suspension duties are handled by MIR Racing forks, and the rear by a DNM / Gubellini shock absorber, both offering adjustment possibilities (preload, rebound, compression depending on models) to tailor the handling to your style and track conditions.

4. Is the braking system up to the level of the engine performance?

Yes, the braking system relies on high-end components: a Formula master cylinder and caliper at the front, and a MIR Racing assembly at the rear. This level of equipment, rare in this segment, guarantees braking power and endurance consistent with the 16 hp and speeds reached on the track.

5. What options are available to customize my GP12?

Four options are available in the catalog: Andreani fork cartridges (+799 €), MyChron data acquisition with basic installation (+615 €), PZRacing telemetry (+350 €), and a second set of ultra-light 12" wheels (+140 €). Custom vinyl wrapping is also available (+499 €). These options transform the already high-performing base into a complete development machine.

6. How does ordering and delivery work?

This model is available exclusively on pre-order by writing to the provided email address. Once ordered, delivery is arranged by appointment within 5 to 8 business days. Shipping is free for vehicles (threshold 500 €), and payment is secured via 3D Secure.

7. What XtremRS warranty applies to this vehicle?

You benefit from the 2-year XtremRS warranty, excluding consumables (tires, brake pads, fluids, etc.) and personal safety equipment (helmet, gloves, protections). This covers original mechanical and electronic components against any manufacturing defects.

8. Are the ultra-light 12" wheels supplied as standard?

Yes, the GP12 comes standard with ultra-light 12-inch wheels. The "second set of extra wheels" option (+140 €) allows you to acquire an additional set to mount rain or soft compound tires, without wasting time in the pits on track days.

9. Does the product visual match exactly what I will receive?

The standard livery may vary. If you want a specific design, the custom vinyl option (+499 €) ensures a unique look, approved before production.

The use of Pit bikes / Dirt bikes / Quads is strictly prohibited on public roads. The use of a vehicle such as a Dirt bike, Pit bike, or Quad must take place on suitable terrain designated for the activity (track, private land).
The user must wear appropriate protective equipment and be under adult supervision.
The purchase of a vehicle like a Dirt bike, Pit bike, or Quad by a minor over 14 years old is carried out under the responsibility of an adult. Only a single user may ride the vehicle.
Purchases on the XtremRS website must be made by an adult.
Warning: Dirt bikes / Pit bikes / Quads / Pocket quads are motorized machines and not toys.
It is recommended to have assembly and maintenance performed by a professional. We advise users to check the vehicle's condition before and after each use.

General

Brand MIR
Reference IMP-4437

Features

Engine Thermique 4 Temps
Front Wheel Size 12"
Rear Wheel Size 12"
Engine displacement 155cc
Power 16.3
Brake Type Freins à Disques Hydraulique
Clutch Manuel
Transmission Chaine
Gearbox 4 Rapports

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