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Mounting, Balancing
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This is a replacement O-ring set for the Novorossi family of .21 engines, including the P5, 421B, T21BF, BS-21SB and the Novarossi 528XR and 528XS. This will work with any Novarossi brand engine including the Top and Rex lines. This O-ring set comes with a replacement slide carb boot, along with a number of high and low speed O-rings for the needle assembly.
Compatibility
Wallie builds is the top option for any racer looking to have the best available car at the track. These kits are built to be winners and give you the best opportunity for wins and podiums.
- Wallie Builds will cover shipping charges to anyone in the US.
- Once the sale leaves beachRC and arrives at Wallie Builds we will take full responsibility for the order.
- Anything with the build will be handled by Wallie Builds.
