This kit is the Ultimate High Performance Gearbox Upgrade Kit for JM Gen. 9. .Refit requires some hands-on ability Why upgrade when you can build your very own high performance gearbox from the ground up. We’ve selected the highest quality components available today and compiled them in a complete, ready-to-go gearbox build kit. If you want the absolute best performance out if your blaster, this is the kit for you. Features: Assorted High end products of good quality and high durability required to upgrade GEN 9 internal gearbox. If assembled correctly you can expect to achieve a FPS range from 375 – 412 FPS with a high rate of fire on full auto Includes 2 springs of different gauge depending on what you want to get out of your Blaster The Pack Contains: 2 x Green O rings 2 x Clear Silicone O rings 1 x GEN 9 metal competition trigger 1 x Brass cylinder head with double O ring seal 1 x Brass nozzle with black rubber tip 1 x Polished bore cylinder – silver look 1 x Blue SHS 14 Tooth piston with metal rack – high quality 1 x Complete silver wiring loom with GEN 9 trigger block and contact plate with spring 1 x Metal buffer tube screw 1 x Metal Spring Retainer 1 x SHS M90 spring 1 x SHS M120 spring 1 x SHS 18:1 carbon steel gear set 1 x SHS 8mm bushing set 1 x Fighting Bro shimm kit 1 x Metal anti reversal latch with spring 1 x Nylon Tappet Plate 1 x Nylon gearbox housing with matching Allan key/hex head screw set 1 x Purple Chi Hai high torque/ high speed motor – RATED 8.4 V – 39000 RPM 1 x Ported, dome shaped piston head 1 x Clear plastic T piece 1 x Standard GEN 9 length alloy barrel 33.5cm 1 x Nylon fire mode selector plate Please note: The reliability, and performance increase is dependent on the quality of the installation. Professional installation is required.
