The Serpent 600706 - 2-Speed Center Blocks for SL8 XLI 811GT are precision-machined aluminium units that boost gearbox strength and longevity. Built to suit the lighter Viper 977 gearbox layout, these blocks are a straightforward upgrade for racers seeking consistent shifting and improved chassis feedback.
A practical choice for builders who prefer metal hardware to reduce flex and maintain gearbox geometry during competition.
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