09 889 6857 | support@thumpstar.nz
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Thumpstar - MX 50cc SR

$2,599.00 [Crate Price]
or 6 weekly interest-free payments of $433.16 Laybuy
What's this?

Currently in Research and Development

Bring back the 2-strokes! For the past year, we have been conducting research and development of one of our most exciting projects yet! The Thumpstar MX line of bikes. Looking forward to 2020 will be releasing our first race ready line of 50cc two strokes which will stack up and compete, without the worry of a heavy price tag when your jr racers are just starting out. Our design and development team has put together the ultimate 2-stroke 50cc package which efficiently delivers sufficient power to compete with the other race ready bikes in the mini class. At the heart of the bike sits a 49 cc, 1-cylinder, 2-stroke, water-cooled engine with reed intake that produces impressive power out of the box. The centrifugal automatic clutch provides manageable acceleration and makes learning to ride a breeze.

MX50SR Forks

Fastace Adjustable forks with Progressive Springs


Top of the line Fastace suspension provides a fully adjustable and responsive package which gives the rider full feel and control of the bike through ruts, over bumps, up takeoffs, and down landings.



The Henly CNC hubs are made from 1 piece billet alloy on precision CNC machines, and are anodized to provide wear resistance and provide you with a heavy duty package which will stand against the test of time.

MX50SR Stainless Spoke

7075 Rims w/ Stainless Spokes


Henly designed 10/12” wheels with anodized red hubs mean that the bike is not only a killer with looks, but also provide extreme durability. The rims are made of 7075 series alloy and are used by almost all top riders. Henly rims keep on being the best, strongest and most reliable rim we can provide. Stainless steel spokes prevent stretching and snapping which is a common issue with other types of steel spokes.

1 1/8 Fat Bars


The design of the MX Steeze handlebar is aimed at reducing weight whilst maintaining high strength. Strength for the bar is created within the tapered wall profile allowing for a braceless design. This enables a confident level of flexibility in the handlebar. Millions of tiny steel shots are blasted at high velocity at the bar, breaking the surface tension of the material and leaving a textured surface finish which increases the fatigue life and durability of the bar.

MX50SR Fat Bars

Free Spare Parts Kit

Thumpstar Free Spare Parts Kit

Product Packaging

Pitbike Assembly & Servicing


Engine 1-Cylinder, 2-Stroke Engine
Displacement 49 cm³
Bore 39.5 mm
Stroke 40 mm
Starter Kickstart
Transmission Single-Speed Automatic
Primary Drive 61:33
Secondary Gear Ratio 11:40
Clutch Centrifugal Clutch
Frame Design Central-Tube Frame with Double-Cradle
Suspension Front VS1 upside-down Ø 35 mm / 205 mm
Suspension Rear VS1 Shock Absorber / 185 mm
Brakes Front Disc Brake / 160 mm
Brakes Rear Disc Brake / 160 mm
Steering Head Angle 66 °
Wheelbase (axle to axle) 1032 ± 10 mm
Ground Clearance 252 mm
Seat Height 684 mm
Tank Capacity 2.3 Litres
Weight (Without Fuel) 41.5 kg
Payment Details;

Credit cards & Debit cards: We accept Paypal, Visa, Master Card payments through our website. Our checkout pages are encrypted using SSL, Credit Cards are verified in real time using Paypal and checked again via Riskified to ensure maximum security. If you would like to pay with Q Card, Prezzy Card or Diners then we can offer this via Trademe Buynow Auction, just contact us at support@thumpstar.nz to arrange this.

Online Banking: Payments can be made by direct credit bank transfers. Simply Checkout, and click bank deposit option, you will then be emailed an invoice, remember to use your order number as a reference. Order over the Phone: To make an order over the phone, simply call 09 889 6857 or TXT 027 848 6779 to speak with one of our friendly customer service team. They can email you an invoice directly and will be able to help you with any questions you may have, as well as placing orders over the phone.

Bank Details:

Target Imports

ANZ Bank

06 0909 0333210 25

Ref: Order number

Parts Shipping

Parts are sent via PBT Couriers who send NZ wide within 1-2 days including a tracking number, we have used PBT for many years and have found them very reliable. YES we combine orders.

  • No Pickup Dunedin
  • $10 South Island Small Part
  • $15 North Island Small Part
  • $40 Engine New Zealand Wide
  • $7 additional for rural delivery (RD) or can collect from PBT Depot

If you do not pay additional for Rural Delivery your part will be sent to closest PBT Depot. To check your post code is classed as Rural(RD) - CLICK HERE

Motorcycle Shipping

Thumpstar motorcycles are all sent in a steel crate and come 95% assembled. Please click here for assembly video instructions. We recommend having your local Thumpstar dealer assemble your new motorcycle.

Minicross, Pit Bike and Kids Motorcycle,

ATV, Quad and Full sized 250cc Motorcycles,

  • Free Pickup Dunedin
  • PBT Depot Collect ($90 South Island $130 North Island)
  • To Your Door ($130 South Island, $170 North Island)

Facetime/Skype Viewing

Want to view a Thumpstar from the comfort of your own home?

We now offering a new service to our customers, where customers can book a Facetime viewing (if have a Apple Iphone)

Our friendly salesman will show you around the Thumpstar and let you check out any details you wish, you can even listen to it run.

To book a viewing please TXT 027 848 6779 with what model you are interested in and we will be in touch with a time that suits, usually within 12 hours.


  • 09 889 6857
  • support@thumpstar.nz
  • Target Imports
  • 270 Kaikorai Valley Road
  • Dunedin, 9011
  • New Zealand

Help Ordering

If you are unsure on ordering a part, we recommend watching our Youtube video under Info/Video tab or visiting our workshop section, if you still need help then please contact us,

Phone: 09 889 6857

Email: support@thumpstar.nz


Target Imports has been distributing Pit Bike / Mini Bike for the LONGEST in New Zealand and on Trademe (2004) this is our new web account which has been setup with one of the most advanced online parts ordering systems available, so you can be sure we always have stock. For Trademe feedback reference please visit account fmxjason which has a %100 record.

Our company is based in New Zealand and Australia and are the official distributors of the very popular Genuine Thumpstar. We also sell Pitster Pro and Reaper and can supply parts for other NZ Pit Bike / Mini Moto brands including Honda crf50, crf110, Yamaha TTR110, Kawasaki KLX110, KX 65, Suzuki DRZ 110, RM65, Daytona, Forza FMX and Braaap.

We also have lots of Dirt Bike, Motocross Riding Gear and Parts at great prices.

For more information on our company, just search GOOGLE.

We ship international, customers from overseas can benefit from our low exchange rate.

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