This shift drum replaces the OEM KLX/DRZ shift drum and allows use of the 4th gear that is blocked out on the stock bike. It can also be used to change the "L" model 4 speed motors to "all-up" shifting. Note: On the "L" model bikes, you will want to eliminate the neutral-safety-starter switch (by grounding the wire on the harness).

• OEM quality part
• Installs the same as stock 3-speed shift drum
• Requires complete engine disassembly to install
• Includes new shift star