LRP Nitro Engine ZR.32 Spec.4 Pullstart Nitro Engine

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This is the LRP Nitro Engine ZR.32 Spec.4 Pullstart Nitro Engine. The LRP ZR.32 Spec.4 Pullstart is based upon the very popular ZR.32. In order to be able to again increase the enormous power of the .32 monster, we build in a completely constructed carburettor that has an additional notch for improved adjustability and that provides an even more efficient fuel-air mixture.

This leads besides an improved idle speed setting, also to better responsiveness and more torque. The already known Heavy-Duty CoolDown- Max cylinder head provides sufficient cooling for this power unit.


  • MASSIVE Big Block size - You cannot replace displacement with anything‚Ķ but even more displacement!
  • New CoolDownMax cylinder head - Improved cooling and higher efficiency through new cooling fin arrangement
  • XTEC PowerCarb3 15S-2 carburettor - Flow optimised carburettor with built in 9.0mm venturi for maximum power
  • Universal fit - Fits all major .21 engine mounts
  • 5 + 1 Ports
  • FREE PLUG - FREE LRP Platinum / Iridium R5 glow plug included
  • Standard burn room - Guarantees easy adjustment of the engine in all conditions
  • XTEC T6 engine housing - Especially reinforced heavy duty engine housing for toughest offroad action
  • Massive con rod - Extra reinforced con rod. Specially adjusted for .32 engines
  • Ultra strong pullstart - Pullstart specifically developed for big block engines
  • Power Start capable - Prepared for the use of the LRP Power Start for starting the engine at the push of one button
  • Torque you can barely handle

Cubic capacity: .32 (5.24 ccm)
Bore: 19.80mm
Hub: 17.00mm
Power: 4.37 HP*
RPM: 33.300 RPM*
Number Channels: 5 + 1
Glow Plug: LRP Standard R5 (No. 35051)
Carburetor: XTEC PowerCarb3 15S-2 with machined in 9mm venturi
Weight: 420g
Class: 1/8th Offroad Buggys/Truggys
* Figures may vary depending on used fuel, muffler and tuning

This product was added to our catalog on October 4, 2018

Verified Owner
Friday, Jul 31 2020 (1 week ago)
LRP Nitro Engine ZR.32 Spec.4 Pullstart Nitro Engine
Very powerful engine, wheelie monster on my Savage XL, however, I struggled to get it running because the factory needle settings are grossly inaccurate, took some time to figure out where the needles needed to be. This was verified on two engines, sent a email to tech with these settings. Cannot give a perfect review because LRP needs to address this issue, with online research I found that others had the same problem.
Verified Owner
Saturday, Jul 25 2020 (2 weeks ago)
LRP Nitro Engine ZR.32 Spec.4 Pullstart Nitro Engine
Awesome engine. Great all around engine. Amain is fast at shipping
Verified Owner
Monday, Apr 20 2020 (4 months ago)
LRP Nitro Engine ZR.32 Spec.4 Pullstart Nitro Engine
Engine would not start with factory settings at all due to being too rich and spitting fuel out of exhaust. I leaned it out a bit to get it started and the connecting rod broke after the pull starter spring unwound and jammed up. Very unhappy with this motor. I have been doing this for 20yrs and never had an engine function so badly