LEGO Technic 4X4 Crawler (9398) for sale online | eBay
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Batman Tumbler wie L 76023 + LEGO Technik Jeep 9398 + MOC Umbau in Thüringen - Hirschberg | Lego & Duplo günstig kaufen, gebraucht oder neu | eBay Kleinanzeigen
Ultimate upgrade for the 9398 4x4 crawler with pendulum steering (no servo needed). I also made a pendulum steering file in the rebrickable link you can download and have a closer look
BrickLink - Set 9398-1 : LEGO 4 x 4 Crawler [Technic:Model:Off-Road] - BrickLink Reference Catalog