BBR 4-Speed Shift Drum KLX/DRZ110 2003-09 | 414-KLX-1101 inhouse - GAS GAS EC 250

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So if you have a counter-shaft oil leak

Dyno tested and approved

(2000-2007) DR-Z400 E

BBR 4-Speed Shift Drum KLX/DRZ110 2003-09 | 414-KLX-1101 inhouse - GAS GAS EC 250The best sleeper upgrade for your 110. Allows the stock 3 speed transmission to be converted into a race ready 4 speed OEM quality. Forged steel. This shift drum replaces the OEM KLX DRZ shiftdrum 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