Genuine OEM 18″ pit bike inner tube, heavy duty and hard-wearing. Beware of cheap tubes from China that can burst causing serious injury.
Apico 2mm MX Tyre Inner Tube - REAR 110/90-19" Motocross Tube
110/90-19 Motocross Tyre + Inner Tube Rear Fits Most 250cc / 450cc MX Dirt Bikes
90/100-16 Motocross Tyre + Inner Tube Rear FITS 85SX RM85 CR85 YZ85 KX85 TC85 BW
80/100-12 Motocross Tyre + Inner Tube Rear FITS 65SX RM65 CR65 YZ65 KX65 TC65
Michelin Heavy Duty Reinforced Inner Tube - 18 or 21 Inch Rim Size
Motorcycle 18" Inner Tube Continental 3.00 to 3.25" / 90mm