Cale boite à clapet 5mm Derbi/AM6 Crazybike Compatibles pour les carburateurs à

Compatibles pour les carburateurs à montage souple de type PHBG

la boite à kick et le ressort moteur d'origine

thus promoting performance

Fourni avec manchon et visserie de montage

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Cale boite à clapet 5mm Derbi/AM6 Crazybike Compatibles pour les carburateurs à5mm shim to be inserted under the valve box. Allows to give volume in the low engine which in my case allowed me to gain 0. 5hp (and 0. 8hp with 10mm of shim) with a 90cc MXS GP engine. This result is to validate on the bench for each configuration. The assembly is possible on all Derbi as well as AM6. It is possible to use it directly with the VForce 3i.