HPI Racing 87633 Crawler Conversion Set for Wheely King FEATURES: Lengthens the wheelbase by 2-1/4 (57mm) for better stability creating the longest wheelbase allowed by class rules Front and rear diff lock INCLUDES: Complete conversion set with hardware and all items listed above and instruction manual REQUIRES: Disassembly of Wheely King to install all crawler components COMMENTS: For the Servo Mount/High Link Set, order HPIC5632 jxs 10/08/08 ir/jxs