Search  for anything...

ZXTDR 125cc Semi-Auto Engine 4 Stroke Motor for ATV Quad Bike Go Kart

  • Based on 24 reviews
Condition: New
Checking for product changes
$389.69 Why this price?
Save $70.30 was $459.99

Buy Now, Pay Later


As low as / mo
  • – Up to 36-month term with PayTomorrow
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by ZXTDR

Arrives Nov 27 – Dec 2
Order within 8 minutes
Available payment plans shown during checkout

Features

  • This 125cc Semi-Auto Engine suitable for ATV 4 Wheelers Quad bikes
  • Speed complete racing engine, 3 forward 1 reverse gear
  • Upgrade your stock 50cc to this 125cc monster, you can feel the power difference immediately
  • See below description for more specifications and wiring.

Description

Specifications:Displacement: 125ccType: Horizontal, single-cylinder, 4-stroke, air-cooledCompression ratio: 9.0: 1Front sprocket 420 - 17mm - 14TTransmission: 4-speed 3 forward 1 reverse gear Bore x Stroke: 2.06" x 2.19”(52.4mm x 55.5mm) Top Engine Mount : 92mmBottom Engine Mount: 82mm Bolt to Bolt :152mm (6")Rated Power & Rotating Speed: 5.8 kw/7500r/min±375 r/minMax. Torque & Rotating Speed: 8.5 N.m/5000r/min±250 r/minIdle speed 1500 r/min±100r/minIgnition: CDI Wiring:1. Five wires (Plug): For gear indicator2. Yellow wire: For storage battery3. Pink (or Yellow) wire: For storage battery4. Black & Red wire: For signal trigger5. Green wire: For grounding6. Blue & White: For trigger coil


Manufacturer: ‎ZXTDR


Brand: ‎ZXTDR


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎U-TD205-1


Amperage: ‎6 Amps


Date First Available: July 31, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 27 – Dec 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Runs well quality control could be better.
Engine runs great but had an oil leak after 10 min of ride time aswell as an issue with the magneto the magneto was remedied rather quickly. As for the oil leak after some back and forth with the company for a couple weeks and some debating we came to a resolution. I give 4 stars due to quality control on the manufacturers end. ... show more
Reviewed in the United States on June 12, 2019 by lechero lechero

  • great for a engine rebuild
very fast stock
Reviewed in the United States on June 9, 2021 by Allison Schumann

  • Good little engine
Runs good, direct replacement, Issues with shipping, not any fault of the seller Good little engine
Reviewed in the United States on December 18, 2019 by Robert Ballard

  • Este motor no es 125 es 110
Que me dijeron que era 125 y no lo es es 110
Reviewed in the United States on April 21, 2022 by Aron

  • Works well
Was just as advertised and jolted right in.
Reviewed in the United States on February 4, 2020 by Brenda Olsen

  • A satisfied CUSTOMER
The engine is as advertised. Arrived in a timely manner. I ordered another same engine. I will continue to purchase from them in the future. So far so good.
Reviewed in the United States on November 11, 2020 by Shawn

Can't find a product?

Find it on Amazon first, then paste the link below.