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The case protects the servo's gears and electronics
1/10-scale rock crawlers
Adjustable battery straps
Part Number: ARA2117
Tekno RC TKR1721 Crankcase ESC The case protects the servo'sTekno RC TKR1721 Crankcase (21aM aP) Product Description: The TKR1721 is a replacement crankcase for Tekno RC's Blok . 21 competition nitro engines, compatible with the 21aM and 21aP power plants. The crankcase is the main engine housing that carries the crankshaft, bearings, and sleeve, so this is the part to reach for after a catastrophic engine failure or when rebuilding a worn or damaged case. Features: Direct replacement crankcase for Blok 21aM
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