For JB64 Jimny and JB74 Sierra This is a set of: ① Brackets for installing 16cm speakers in the front. ② Brackets for installing the removed front speakers in the rear. The design allows for easy installation with bolts and a single Phillips screwdriver. 《For Front》 ・Compatible with aftermarket 16cm speakers. Set of left and right. ・Includes mounting bolts. ・Installation of Carrozzeria TS-F1640 has been confirmed. Although the dimensions appear to be the same for major domestic manufacturers, this has not been confirmed. ・Dimensions Inner diameter: φ132 Outer diameter: φ160 Thickness: 18mm PCD: φ150 《For Rear》 ・For genuine speakers removed from the front. *No wiring modification needed as the connectors are the same for the rear. Set of left and right. ●Material PLA+ *Higher strength, rigidity, impact resistance, and heat resistance than PLA. *No worries about moisture absorption like MDF. ●Installation Instructions 【Front】 ① Install the brackets on the vehicle side as shown in the second photo. *Includes 3 M6 bolts, washers, and nuts each. ② Screw the speakers to the brackets. *Includes 4 tapping bolts each. ◎ To prevent screws from loosening due to long-term use, we recommend using thread locker on the nuts. (Available on Amazon for around 200 yen.) 【Rear】 ① Screw the speakers to the brackets *Includes 3 small bolts each. ② Remove the cable hooks on the vehicle side indicated by the red circles in the 7th photo (pinch both sides and push them in). ③ Connect the speaker connectors. *No wiring modification needed as the connectors are the same for the front and rear. *If the connector wiring doesn't reach, cut the tape bundling the cables as shown in the 9th photo and pull them out. ④ Screw the speaker-attached brackets to the vehicle and reattach the cable hooks. *It's easier to set by placing them horizontally as shown in the 7th photo and rotating them 90 degrees. *Includes 4 large bolts each. Speakers are not included. Thank you.