The GKTECH CD/JK transmission spring kit will bring your gear stick back to life by stiffening up the shifter and increasing overall shifter feel. The kit comes with 2 sets of springs to suit your preference. To install simply remove the 2 bolts from the side of the transmission under the shifter assembly and install with your choice of springs. Fits all CD/JK transmissions fitted in Z33 350z and Z34 370z's FAQS What do these springs actually do?They make your gear stick move towards the center of the box (ie. neutral) faster and keep force on it to give you more feel of the shifter.How do I install there springs?Very easily, remove the 2 bolts on the transmission under the shifter area (there's one on each side) and insert these new springs and do up the bolts.Will this spring kit fit my car?Please refer to the confirmed vehicle list in the item description. We do not sell any items that aren’t listed on our website and if we haven’t confirmed fitment on your car, then we don’t know if it will fit or not. We may update the list in the future but until then, please do not ask as if we knew the answer, we would have already told you. VEHICLE COMPATIBILITY Fits all CD/JK transmissions fitted in Z33 350z, Z34 370z's and G37's NISSAN RZ34 ZZ33 350ZZ34 370Z INFINITI G35G37 USER GUIDE(S) INSTALL VIDEOS ASSEMBLY GUIDES Download Z334-SPNG - Customer ASM