This is the Big Block Conversion Kit from Traxxas for the Traxxas Revo monster trucks. This conversion kit gives Revo owners the option of installing various .21-.28 size pilot shaft big block engines in their monster truck. The conversion kit also includes the forward only conversion kit as well as the big block engine mounting hardware. The following items are included:
– Forward only conversion kit – TRA5394X
– Universal engine mount
– Manifold with gasket and spring
– Flywheel and clutch nut
– Forward only shaft
– Miscellaneous hardware required for installation
The following engines are known to work with this installation kit without modifications: O.S. .21 VZ-B, Team Orion Wasp .28 and the Dynamite Mach .26.
The following engines are known to work with modification work on the engine mounting assembly: Nova Rossi 528, Nova Rossi .21 P5, Picco .21 Maxx, Sirio S23TX, Sirio S27, and Team Orion Wasp .26, OFNA Picco .27 (non pull start only!).
The following engines are known to NOTwork with this conversion kit: Thunder Tiger Magnum Pro 21, Associated Pro 21R, O.S. .21 RG and O.S. .21 RZ.
This product is expected to become available for purchase on Sunday, October 5, 2025
- Traxxas Revo Nitro
Andries Buskens Verified Owner Thursday, May 18 2023 (about 2 years ago) Traxxas Revo Big Block Installation Kit No brainer! Both the revo and slayer! Perfect set up for anything up to a .28 Andrew Pope Verified Owner Friday, Jul 29 2022 (about 3 years ago) Traxxas Revo Big Block Installation Kit perfect big block kit for the revo 3.3 to put the dynamite mach 2 .26 motor in View all reviews
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