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Rovan

Rovan Baja 71cc 4 Bolt 2 Stroke Engine w/ Walbro Carb & NGK Spark Plug

  • Petrol

Part no. 810291

3 in stock5.0
2 reviews
1 / 21
1 / 21

$882.09

or 4 fortnightly payments of $220.52 with afterpay or PayPal, or zip

Add it to My Garage

Rovan 71cc 2-stroke engine with Walbro WJ71 carb, NGK CMR7H plug, CNC components, and wear-resistant 8000 rpm clutch for 1/5 RC petrol vehicles.

  • 71cc large displacement with stable output and greater torque
  • Walbro WJ71 carburettor and NGK CMR7H spark plug included
  • Wear-resistant 8000 rpm clutch and ultra-easy pull starter
  • CNC machined crank case, fan cover, clutch cover, and air filter seat
  • Designed for 1/5 RC petrol vehicles; suitable for experienced drivers

  • 3 in stock · Order in 12h 25m, dispatched today

  • Checking delivery dates…

  • 60-day returns · 12,000+ 5-star reviews · 03 5292 1101 ·

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Overview

The Rovan 71cc gasoline engine has a large displacement and strong power. It provides a stable output and greater torque, resulting in a longer life and better engine performance. It is equipped with the Walbro WJ71 carburettor and NGK CMR7H spark plug.

This engine is designed to be installed on 1/5 RC petrol vehicles and is suitable for experienced drivers with some hands-on capabilities for power modification.

Note

This product is not a toy. Prioritise safety and follow standard operation procedures when using the engine. New engines require running in and setting up — they are not ready to drop in. The Starter Guide needs to be followed and carb needles need to be set to prevent damage to the engine. Regular maintenance is also necessary.

Features

  • New material wear-resistant 8000 rpm clutch
  • Ultra-easy pull starter
  • CNC crank case
  • CNC fan cover
  • CNC clutch cover
  • CNC air filter seat
  • Custom throttle brake lever
  • Custom fuel pipe
  • Exhaust pipe gasket

Specifications

Manifold Bolt Holes - center to center 39.5mm ± 0.5mm
Exhaust Port - 14 × 28mm

Parts

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Reviews (2)

5.0

Based on 2 reviews

  • 5 stars2
  • 4 stars0
  • 3 stars0
  • 2 stars0
  • 1 star0

  • Peter L

    Verified buyer

    24 Feb 2026

    Great engine but I couldn't use it

  • John B

    6 Feb 2025

    I purchased this for my scooter(250lbs driver & scooter combined)! With clutch modifications and a small RC racing pipe it consistently hit 120-130kph on 3 gps systems 10 out of 10 runs! That's really impressive! Definitely a great investment & quality!

Questions & Answers (2)

Have a question, or an answer? Our team and other owners both reply.

  • Andrew W10 July 2026

    Question: Will this drop fit into a V1 45cc Baja bug, my 45cc engine is stuff so I need a replacement so why not an upgrade?

    HamishStaff21 July 2026
    Answer:

    The Rovan 71cc engine will physically mount into your 45cc Baja chassis, as it shares the same clutch housing and mounting footprint. It is not a complete drop-in replacement because your existing 45cc exhaust pipe will not fit the larger 71cc exhaust port. You will need to pair this engine with a 71cc-specific exhaust, such as the Rovan Baja 71cc Tuned Exhaust Pipe Set ROV-95284. As this is a significant power upgrade, some minor hands-on adjustments to the throttle linkage may be required. Hope this help :)

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  • Liam P21 Apr 2026

    Question: Will this fit in the hpi Baja 5b ss and what needs to be done to put it in

    HamishStaff23 May 2026
    Answer:
    Yes, this engine can be fitted to a HPI Baja 5B SS, but it is a major upgrade and may require some slight modification depending on your exact model.

    The main part you will need is a suitable exhaust/performance pipe, as the exhaust outlet is much larger than the factory 26cc SS engine. The matching tuned pipe for this engine is the Rovan Baja 71cc Tuned Exhaust Pipe Set 95284.

    We would only recommend this conversion for experienced users who are comfortable modifying and setting up large-scale petrol RC cars.
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