| Item | Part No. | Part Name | Qty | Serial No. |
| 20K-57-31151 | SEAT ASSEMBLY | H55051- | ||
| 20K-57-33410 | SUSPENSION ASSEMBLY | H55051- | ||
| 1 | 20K-57-32120 | SCREW | H55051- | |
| 2 | 20K-57-31460 | WASHER | H55051- | |
| 3 | 20K-57-31420 | NUT | H55051- | |
| 4 | 20K-57-32220 | COVER | H55051- | |
| 5 | 20K-57-32230 | SUSPENSION | H55051- | |
| 6 | 20K-57-32240 | HANDLE | H55051- | |
| 7 | 20K-57-32250 | BELLOWS | H55051- | |
| 8 | 20K-57-32260 | RIVET | H55051- | |
| 9 | 20K-57-32270 | PLATE | H55051- | |
| 10 | 20K-57-32280 | BELT | H55051- | |
| 11 | 20K-57-32290 | BOLT | H55051- | |
| 12 | 20K-57-32310 | BUSHING | H55051- | |
| 13 | 20K-57-32320 | WASHER | H55051- | |
| 14 | 20K-57-32330 | ARM | H55051- | |
| 15 | 20K-57-32340 | BOLT | H55051- | |
| 16 | 20K-57-32350 | ROLLER | H55051- | |
| 17 | 20K-57-32360 | PLATE | H55051- | |
| 18 | 20K-57-32370 | SPRING | H55051- | |
| 19 | 20K-57-32380 | PLATE | H55051- | |
| 20 | 20K-57-32390 | BOLT | H55051- | |
| 21 | 20K-57-32410 | BOLT | H55051- | |
| 22 | 20K-57-32420 | SHOCK ABSORBER | H55051- | |
| 23 | 20K-57-32430 | WASHER | H55051- | |
| 24 | 20K-57-32440 | FORK | H55051- | |
| 25 | 20K-57-32450 | RIVET | H55051- | |
| 26 | 20K-57-32460 | PLATE | H55051- | |
| 27 | 20K-57-32470 | PLATE | H55051- | |
| 28 | 20K-57-32480 | BUMPER SET | H55051- | |
| 29 | 20K-57-32490 | WASHER | H55051- | |
| 30 | 20K-57-32510 | WASHER KIT | H55051- | |
| 31 | 20K-57-32520 | SPRING | H55051- | |
| 32 | 20K-57-32530 | NUT | H55051- | |
| 33 | 20K-57-32540 | BRACKET | H55051- | |
| 34 | 20K-57-32550 | PLUG | H55051- | |
| 35 | 20K-57-32560 | SLEEVE | H55051- | |
| 36 | 20K-57-32570 | PIN | H55051- | |
| 37 | 20K-57-32580 | YOKE | H55051- | |
| 38 | 20K-57-32590 | SHAFT | H55051- | |
| 39 | 20K-57-32610 | GUIDE | H55051- | |
| 40 | 20K-57-32620 | ROLLER | H55051- | |
| 41 | 20K-57-32630 | TAPE | H55051- | |
| 42 | 20K-57-32640 | SPRING | H55051- | |
| 43 | 20K-57-32670 | BUSHING | H55051- | |
| 44 | 20K-57-33390 | LOWER SUSPENSION | H55051- |
