Thank you very much for viewing! This is a pre-flexed front and rear unit for the MS chassis. We have prepared this to allow you to use the chassis you purchased for a long time. Please use it in case of irregularities such as a decrease in speed or if the front and rear units are broken. By using a milling machine and reducing the manual work as much as possible, the chassis is finished with fewer product errors. The stroke amount is made with medium. If you wish for other strokes, please let us know in the comments. (In the case of V-cut, please let us know even after purchase) Although we have processed new front and rear units, we have set them as "like new" because they are processed products. Springs are not included. We recommend the black spring included in the AO1034 Slide Damper Spring Set. If you let us know in the comments before purchasing, we will send the spring set together 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 and adjust the damping force to your liking. If you let us know in the comments before purchasing, we will send the HG Slide Damper Grease Set together for an additional 440 yen. Processing options ↓ The bottom of the front and rear units, and the part where the counter contacts during movement, are intentionally not processed (because there are individual preferences). We will process it for free if you let us know. Front and rear unit step-up processing is possible with a milling machine. (If the lift height is not specified, it will be raised by 1.8mm) +800 yen (If processing either the front or rear, +500 yen) Rear bumper arch cut +500 yen Change to reinforced front and rear units No.15367 N-02/T-01 reinforced unit +330 yen If you purchase multiple items at the same time, 210 yen off from the second item onwards. Please let us know in the comments before purchasing for processing options and additional processing. Thank you very much.