For those upgrading a Tamiya TRF501X, the Tamiya 53961 - TRF501X Aluminum Caster Block Set provides a tougher option than stock plastic parts. The anodised aluminum construction increases longevity and supplies a crisp blue accent to the front end. Three upper arm positions let you change caster and roll centre to suit different circuits or driving styles.
A sensible mod for enthusiasts who want improved durability and more precise setup options on the TRF501X without complex changes to the rest of the car.
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