178cc ALL Aluminum Ceramic Coated Big Bore Kit - KLX110/L & Z125 tbw0413 With this swingarm

With this swingarm

we highly recommend a professional technician install this kit and the cases bored by a reputable machine shop

TBW0750 - V2 Race head

52mm big bore replacement cylinder for CRF or XR stud spacing

Be certain to purchase the correct version for your model year

178cc ALL Aluminum Ceramic Coated Big Bore Kit - KLX110/L & Z125 tbw0413 With this swingarm178cc ALL Aluminum Ceramic Coated Big Bore Kit Fits*: 2002 Current KLX DRZ 110 & 110L 2017 Current Z125 Pro** YX GPX Zongchen 150 155 160cc Engines (**Case Boring Required) P N: TBW9145 NEW The ALL aluminum ceramic plated 67mm cylinder now comes with aluminum skirt NEW Increased the skirt height and size on the lightweight aluminum high compression 67mm piston with rings, pin, & clips to increase reliability and service life Head gasket kit includes