421x Today

: Find editable and community-shared TRF421 Setup Sheets for both asphalt and carpet tracks on PetitRC .

: Follow the Blog Kentech Build Presentation for a deep dive into weight comparisons and assembly nuances. : Find editable and community-shared TRF421 Setup Sheets

: The default manual settings for belt tension can be too loose. Manually adjust for a "snug but free" feel to avoid skipping under heavy braking or acceleration. 🏎️ Tuning & Parts Upgrades Go to product viewer dialog for this item. : Find editable and community-shared TRF421 Setup Sheets