Thank you for viewing! We sell products created by incorporating the know-how gained from numerous tournament victories and prize-winning experiences. Product Description: This is an MS chassis that has been flex-processed. (Standard axle retention) Using a milling machine to minimize manual work results in a chassis with fewer product errors. The flex operation has been confirmed during production. It moves well, has high vibration damping, and results in a chassis with good drive efficiency. Although a new chassis was processed, it is considered "like new" due to being a processed product. Springs are not included. Please use the black springs included in the AO1034 Slide Damper Spring Set. If you let me know in the comments before purchasing, I can include the spring set for an additional 198 yen. Be sure to apply grease to the moving parts during assembly. Mix the blue and red grease from the No. 15471 HG Slide Damper Grease Set to your liking to adjust the damping force. If you let me know in the comments before purchasing, I can include the HG Slide Damper Grease Set for an additional 440 yen. Processing Options: You can choose the flex stroke amount as a custom order: long, medium, or short. (Free) If not specified, it will be made with medium. ※.1 V-cut flex is basically only short. Medium or longer requires consultation. ※.2 Sugiyama-style flex recommends short or medium. The bottom of the front and rear units, and the parts where the counter touches during movement, are intentionally not processed (due to individual preferences). I will process them for free if you let me know. Lightweight processing (weight reduction & battery drop) +1000 yen Front and rear unit step-up processing is possible with a milling machine. (If the step-up amount is not specified, it will be raised by 1.8mm) +800 yen (If processing either the front or rear unit, +500 yen) Center chassis bottom surface milling processing +1000 yen Rear bumper arch cut +500 yen Change to reinforced front and rear units No. 15367 N-02・T-01 reinforced unit +330 yen For multiple purchases, 210 yen off from the second item onwards. Please let me know in the comments before purchasing.