0638-890
	Optional Kit
1	0602-781
	Cover, Dropcase
2	0602-450
	Chain, 72P
3	0602-455
	Sprocket, 22T
4	0670-183
	O-Ring, Oil Stick
5	0602-012
	Spacer, Shaft
6	0602-135
	Extension, Driveshaft
7	0702-048
	Gear, Reverse-55T (inc. 8-10)
8	0602-023
	. Washer, Thrust
9	0602-022
	. Bearing, Thrust
10	0602-024
	. Ring, Retaining
11	0602-028
	Spring, Return
12	0602-014
	Retainer, Shaft
13	8051-277
	Washer, Lock
14	8002-231
	Screw, Cap
15	8006-406
	Screw, Cap
16	0602-094
	Shaft, Reverse
17	0602-018
	Bearing
18	0702-261
	Idler, Reverse Assembly-19T (inc. 17)
19	0602-215
	Spacer, Reverse Idler
20	8050-242
	Washer
21	8002-130
	Screw, Cap
22	0602-466
	Bracket, Chain Backing
23	0602-085
	Fork, Shift
24	0702-135
	Shaft, Shift Fork
25	0623-122
	Nut, Flex
26	0602-021
	Seal, O-Ring
27	0623-542
	Pin, Roll
28	0702-220
	Arm, Tightener
29	0602-366
	Aligner, Idler
30	0602-112
	Cover, Oil Vent
31	0623-081
	Screw, Self-Tapping
32	0702-260
	Idler, Reverse Assembly-24T (inc. 17)
33	0702-129
	Roller, Chain Tightener (inc. 34)
34	0602-383
	. Bearing
35	0602-398
	Shaft, Chain Roller
36	0602-561
	Block, Ratchet
37	0602-405
	Bushing
38	8050-222
	Washer
39	0602-390
	Bracket, Chain Roller
40	0702-187
	Sprocket Assembly-40T (inc. 42-47)
41	0123-430
	Nut, Lock
42	0602-016
	Bearing
43	N/A
	Sprocket, 40T
44	0602-144
	Retainer, Spring
45	0602-133
	Pin, Slip
46	0602-138
	Spring, Compression
47	8007-397
	Screw, Cap
48	0602-483
	Stick, Oil Level
49	0602-403
	Spring, Torsion
50	0602-404
	Bracket, Spring
51	0602-397
	Spring, Chain Tightener
52	0602-479
	Plug, Drain
53	0123-641
	Washer, Fiber
54	0623-293
	Plug
55	0638-881
	Adapter, Retainer