Hardware, etc.
©
hardware.htm-68A
NOTES:
This article LIKELY
HAS ERRORS IN IT. It was not possible to physically look at
every part listed here. Parts numbers and descriptions were taken
from a SnabbKatalog, and checked against a 1995 printed Parts List, and some
were checked against my own stock of parts. A small amount of input was
from others.
Be aware that BMW descriptions in its
literature are occasionally wrong. Be also aware that
in ILLUSTRATIONS, BMW may
OFTEN show a piece of hardware...or other item, that is NOT the actual
part. Examples of this abound. One might be that an actual Allen
bolt is shown in the illustration as a screw or hex head. BMW
has sometimes kept a part number and then made changes to the part.
In most instances this is of no major concern, and in many instances the updated
part is better for some reason or other. Sometimes there are
problems. BMW
has
changed some of its nut wrench sizes, and maybe other such hardware parts changes that I do
not know about. In one particular instance, which I believe is NOT HARDLY
the only actual instance, the same part number was used
for a nut that originally needed a 19 mm wrench, and the newer shipped parts are
for 18 mm wrench, a size of wrench that is NOT a standard for BMW Airhead
motorcycles. Thus, unless you want to carry the non-standard wrench in
your bike's tool tray, you should be aware of this. In at least one
instance, the dealer had BOTH sizes available in the same box. I do NOT know
the extent of this potential problem. I have seen it in 16 mm heads too.
In numerous instances, below, more than one number for a part may be shown. In SOME instances those are the same part, in other instances there are variations. In some instances those variations are noted. Keep in mind that the main purpose of THIS article is to enable you to go to a dealer and see various parts, and then decide what you want.
Bolt
LENGTH measurements are from under the head to the end of the threads. BMW
bolts for exterior use used to be, generally, cadmium plated to prevent rust. In
some instances this plating provides a bit of anti-seize protection. BMW
uses, generally, bolts rated at 8.8 strength, but at certain places will use
stronger, and even 12.9. Strength rating is always marked on the bolt...and on
some smaller screws too.
BMW has started to drop cadmium plating,
due to environmental regulations. Many of its steel bolts and nuts may
well now RUST!
NOTE: Some BMW bolts have a non-standard HEAD THICKNESS. An example of this will be seen at the left lower rear shock mount.
NOTE: the word 'screw' and the word 'bolt' are sometimes used interchangeably. Typically screw means smaller diameter, but there is no specification for just what constitutes smaller. Also, generally speaking, screw is used for such having Phillips heads or single slot heads.
PLEASE point out errors
found, to the author
e-mail to: snowbum*jps.net; where the * is replaced by an @ sign
Abbreviations:
BL MU sheet nut
BL SHR sheet metal screw (see ** note below)
DT RG gasket ring
LIN BL SHR fillister head self tapping screw (see ** note below)
LIN SHR fillister head screw (see note ** below)
LINSK BL SHR countersunk head fillister self tapping screw (see ** note
below)
MU nut
SHR screw (see ** note below)
SK BL SHR countersunk head screw (see ** note below)
SK SHR countersunk head screw (see ** note below)
STI SHR studbolt
VSL SHR plug screw
ZYL SHR fillister head screw...per book, but is allen bolt??
(see ** note below)
SYL STI dowel pin
6KT BL SHR hex head (see ** note below)
6KT MU hex nut
6KT SHR hex screw (see ** note below)
** NOTE: BMW may use the word 'fillister' differently than in common American usage, at, say, a hardware or similar store. In America, a fillister head screw is NOT an allen head screw; but BMW's usage means allen head, that is, a recessed 6 point socket for use with an allen wrench.
Note also that -KT-SHR is really a hex head, although the SH might lead you to believe it is a allen type; and ZYL-SHR is a allen headed type. HB is supposedly a hex head bolt only.
BMW has sometimes substituted various types of heads, and you might order one type and get another type.
yes...all this is very confusing!
In general I have tried to separate out the
confusion, in the parts listings below.
Hex nuts
07-11-9-922-053; -054 M-6 some books show this as a locking nut; other
books show this number being replaced by 23-11-2-322-368.
07-11-9-922-081; -856; 07-11-9-921-076; -077; -074 M-8
some books have the 074 and -081 as locking types; the -081 is replaced
now by 07-11-9-922-825, and THAT by -856
07-11-9-922-110; 11-11-0-001-104, replaced by 11-11-1-263-903 M-10 some books show -110 as
locking, the -110 is replaced by 07-11-9-915-558
07-11-9-922-122 M-10 x 1.0 mm
33-17-1-237-789 M-10, 12 point
07-11-9-922-148; -940 M-12 x 1.5 NOTE: may be 18 or 19 wrench
size
07-11-9-921-631; -633; 07-11-9-901-309 M-14 x 1.5
Security nuts (similar to Nylocks; that is,
they have plastic inserts)(BMW also has used other types of security nuts, some
are here)
***Sometimes BMW will identify a nut as a
security type, and it is NOT SO, so do NOT depend on the numbers here to be
security nuts, without LOOKING at one.
07-12-9-922-404; -452 M-4
07-12-9-922-411; -410; 07-11-9-922-035; 12-31-2-322-422; 07-11-9-921-038 M-5
07-12-9-922-416; -417; -058; -800; -807 ; -704 M-6
07-11(and 12)-9-922-053 M-6 (some books show this as a locking
nut; other books show this number being replaced by 23-11-2-322-368).
07-12-9-922-428; -427; -713; 07-12-9-964-675; -058; -716; -087; -096; 18-11-4-090-251 6KT MU M-8
**NOTE that 07-12-9-922-058 is listed above for M-8 AND M-6...ONE is in error!
07-12-9-922-435; -434 M-10 self locking
07-11-9-921-615; 07-11-9-900-079 M-10 x 1
07-11-9-922-148; -940; 07-11-9-921-627 M12 x 1.5
07-11-9-921-069; 07-11-9-901-307 M 16 x 1.5
Cap nuts (sometimes called closed dome nuts)
07-11-9-924-000 M-5
46-61-1-236-388; 07-11-9-924-403 M6
07-11-9-924-324 M-6
07-11-9-924-334 M-8
11-12-0-023-160; 11-12-1-744-330 for center of valve cover
Lock and wave (spring) washers (BMW has
interchanged these at times per #, and I
believe that sometimes BMW is not accurate on what type is which, as far as
waverly, plain, locking.)
07-11-9-932-009 A-3
07-11-9-932-013 B 3
07-11-9-932-030; -033 B-4 waverly. 'dented' washer is
07-11-9-936-041; -042
07-11-9-936-041 J 4.3 STAR washer (note conflict
with above line!)
07-11-9-932-041; -043 A-5 -041 replaced by -098; -043 by -047
07-11-9-932-079; 07-11-9-933-095 A-8
07-11-9-932-046 B-5 lock (spring washer, 5 x 11)
07-11-9-932-062; -061; -070; -071; -072; #6 or B-6
07-11-9-932-073 WAVERLY
B6
07-11-9-933-082 M-6 lock may be error, may be flat washer
07-11-9-932-094;-093; -077 B-8 spring/waverly. Book is
unclear. It appears that -094 is replaced by 07-11-9-932-079 which was
replaced by 07-11-9-933-095, but -933-079. Suspect a digit error on the
-933- term
07-11-9-933-095; -079 B-8 or M-8 lock (may be waverly)
07-11-9-932-112 B-10 spring; may be A; large O.D.; for medium
diameter A-10 use -103 and -111; for large O.D. A10 use -122. see also
07-11-1-242-296.
07-11-9-933-110 B-10 lock
07-11-9-936-042 J type 4.3 star washer
21-21-1-242-377 A 7.4 star washer (BMW calls it a fan washer); clutch
washers
07-11-9-936-191 A 8.2 star washer
07-11-9-930-840 B8 SPLIT lockwasher. This is the washer that was
used at the driveshaft U-joint before BMW wised up and eliminated it in favor of
a slightly shorter bolt.
34-11-1-240-570 flat size 8 washer
Plain washers
07-11-9-931-029 black
07-11-9-936-405; 07-11-9-931-622; 07-11-9-931-015 3.2
07-11-9-931-033; -030; 07-11-9-936-415; -416 A 5.3
07-11-9-931-065; -660; 07-11-9-932-081; 07-11-9-936-432 A 8.4 or plain 8.4
07-11-9-931-826; -684 for M8 bolts ; 8.4
07-11-9-931-027 A4.3
07-11-9-931-043; -018; -650; -696; 34-21-4-044-133; 07-11-9-936-426; -408;
-425 6.4 for M6 bolts
07-11-9-931-668; -664; -649; -077; -698; 36-31-1-451-479 10.5 A 10.5
36-31-3-004-378 Thick washer for rear axle of /5; also see
33-41-1-232-709 and 33-17-1-236-956 for some or all later models.
07-11-9-931-083 A-13, used on size 12 bolts
Plain (solid) sealing washers and crush
washers (note
that many early crush type washers are now being shipped as
slightly different number and are solid
type)
07-11-9-963-140; -130 DT RG C 12 x 15.5 crush, driveshaft drain and
driveshaft fill.
07-11-9-963-999; -470; -047; -041; DT RG C (or A) 8 x
11.5 Fork drain, late model rear drive oil level inspection hole.
07-11-9-963-213; -200 14 x 20 DT RG rear drive drain; transmission fill and drain.
07-11-9-963-259; -200 oversize 16 x 20 DT RG rear drive
drain; transmission fill
and drain. 07-11-9-963-252 DT RG A 16 x 20 as used at pulse air fitting at
cylinder head and airbox.
07-11-9-963-073 10 x 13.5 x 1 solid washer for top of fork
bolt
07-11-9-931-622; -015 3.2
07-11-9-936-413; -412; 07-11-9-931-637 A4 flat
washer, 4.3
07-11-9-936-415; -416 5.3
07-11-9-963-010 DT RG A 5 x 7.5 small solid washer, fork
drain
07-11-9-963-151 solid washer 12 x 17 fork bottom
07-11-9-963-034 solid washer, thermostat lower bolt 6.5 x 9.5
07-11-9-963-130 DT RG A 12 x 15.5 solid
washer for oil cooler banjo bolt; also used at the neutral switch on early 5
speed transmissions. see also 61-21-1-355-262, and at fork lower, bottom,
center bolt.
07-11-9-963-002 flat washer 3.5 x 6
07-11-9-963-310; -300 DT RG C 18 x 22 crush, engine oil pan
drain. -300 is solid.
07-11-9-963-420 DT RG 26 x 31 used at dipsticks
until 1980. Part is obsolete, but UNconfirmed information was that
POSSIBLY #11-43-1-337-308 will work.
M-4 hex head bolts 6KT SHR
07-11-9-913-091 4 x 20
07-11-9-913-097 4 x 25
M-5 hex head bolts 6KT SHR
07-11-9-913-212 5 x 8
07-11-9-913-218 5 x 10
07-11-9-919-613 5 x 12
07-11-9-919-903; 07-11-9-913-252 5 x 20
M-6 hex head bolts 6KT SHR
07-11-9-913-426; -432; 07-11-9-914-148 6 x 10
07-11-9-913-441; -014 6 x 12
07-11-9-913-451 M 6 x 14
07-11-9-913-465; -015; -464; -466; 07-11-9-911-218 M6 x 16
07-11-9-913-470; -019 6 x 18
07-11-9-913-476; -016; 07-11-9-915-030; 07-11-9-913-114 M6 x 20
07-11-9-913-567 6 x 22
07-11-9-913-480; -018 6 x 25
31-42-1-240-053 6 x 28
07-11-9-913-499 6 x 28, could be 30 mm
31-42-1-237-529; 32-71-1-240-053; 07-11-9-913-590; 31-42-1-240-053; 07-11-9-913-573 6 x 30
07-11-9-912-303; 07-11-9-901-189 M6 x 35
07-11-9-912-312; -323 6 x 40
07-11-9-912-326; -324 6 x 45
07-11-9-912-335; -337 6 x 50
07-11-9-912-360 6 x 65
M-8 hex head bolts 6KT SHR
07-11-9-911-605; 07-11-9-910-342 8 x 12 thread
pitch 1.0
07-11-9-913-618; -624; 07-11-9-901-191; 07-11-9-919-939 8 x 16
07-11-9-913-640; 07-11-9-901-120 8 x 20
07-11-9-913-652 8 x 22
07-11-9-913-656; 07-11-9-901-125 M8 x 25
63-12-1-356-921 8 x 25 as used on side of /5 headlight
shell
07-11-9-913-662 8 x 30
07-11-9-913-111; -674; 07-11-9-912-477; 33-41-1-232-701 M8 x 35
07-11-9-912-507 8 x 45
07-11-9-918-655 8 x 50
07-11-9-912-556 8 x 80
M-10 hex head bolts
07-11-9-911-631 10 x 1 x 20 as used with /5/6 oil
filter inner cap
46-52-1-235-511 10 x 20 special shoulder bolt used at center stand
07-11-9-913-807 10 x 12
07-11-9-913-831; 07-11-9-913-834 10 x 25
07-11-9-913-839; 07-11-9-901-166 10 x 30
07-11-9-913-837; -844; 46-71-232-703 10 x 35 -837
may be 10 x 30
07-11-9-913-855; -853; -868; 07-11-9-901-169; 33-53-1-232-702 10 x 45
07-11-9-913-859 10 x 50
07-11-9-912-453; 07-11-9-919-756; 07-11-9-901-107 10 x 60
M-12 hex head bolts
M-14 hex head bolts
4 mm Allen bolts ZYL SHR
07-11-9-919-381 4 x 12
5 mm Allen bolts ZYL SHR
07-11-9-919-611; 12-13-2-322-416 5 x 8
07-11-9-919-614; 07-11-9-900-311 M5 x 16
07-11-9-919-617; -903; 12-31-2-322-418 5 x 20
07-11-9-919-619 5 x 30
07-11-9-919-908; 12-31-2-322-417 5 x 45
6 mm Allen bolts ZYL SHR
07-11-9-919-910 6 x 10
07-11-9-919-792 M6 x 10, with captive waverly
07-11-9-919-912 6 x 12
07-11-9-919-621; -965; -913; -912 6 x 16
07-11-9-919-918; 46-54-2-322-498 M6 x 18
07-11-9-919-716; -920; 23-11-2-322-407 6 x 20 The -407
usually has a deep head which is
particularly nice for use at the oil filter
outer cover/housing.
07-11-9-919-921; 46-71-2-322-405; 07-11-9-919-625 M6 x 25
07-11-9-919-927; 31-42-2-311-105 6 x 30
07-11-9-919-931; -932 M6 x 35
07-11-9-919-937; 46-61-2-322-494 6 x 40
07-11-9-919-630 6 x 50
07-11-9-919-956; 61-12-2-322-496 6 x 60
8 mm Allen bolts ZYL SHR
07-11-9-919-637 8 x 12
07-11-9-919-640; 07-11-9-901-023 8 x 16 some books say 8 x 15
for -640
07-11-9-919-974; -969; 07-11-9-920-151 8 x 20 -974 may
be 22 mm
07-11-9-919-646; 07-11-9-901-024 8 x 25
07-11-9-919-647; 07-11-9-901-025 8 x 30
07-11-9-919-984; 07-11-9-901-027 8 x 35
07-11-9-919-648; 07-11-9-901-029 8 x 40
07-11-9-919-638; 07-11-9-901-033 8 x 45
07-11-9-919-649; -796; -803; 07-11-9-901-034 8 x 50
-034 may be 8 x 45
07-11-9-919-651 8 x 55
07-11-9-919-656; 07-11-9-901-036 8 x 80
10 mm Allen bolts
07-11-9-919-662 M10 x 12
07-11-9-919-787; 07-11-9-901-039 10 x 20
07-11-9-919-769; 07-11-9-901-049 10 x 30
07-11-9-919-740; -771; 07-11-9-901-064 10 x 35
07-11-9-919-756; 07-11-9-901-107 10 x 40 may be error,
-107 may be 60 mm long
07-11-9-919-672; 33-17-1-454-309; 07-11-9-901-088 10 x 45
07-11-9-919-739 10 x 50
12 mm Allen bolts
ZYL SHR
14 mm Allen bolts
Threaded lengths; studs
07-11-9-908-255 STI SHR 6 x 25
07-11-9-908-104 STI SHR 6 x 40
07-11-9-908-378 10 x 50, used at 12:00 and 6:00 on cylinders-to-head
07-11-9-908-174 (may be
07-12-9-908-174, or, may be two
types of these with different numbers!) 10 x 30, used as above.
11-11-1-252-310 STI SHR
07-11-9-903-306 STI SHR 8 x 18
07-12-9-903-326 STI SHR 8 x 25
07-11-9-903-349; 07-12-9-908-130 STI SHR M8 x 35
07-12-9-908-141 STI SHR 8 x 45
07-12-9-908-135 STI SHR M8 x 50???
07-12-9-908-137 STI SHR 8 x 55
07-12-9-908-145 STI SHR 8 x 65 original valve
cover center stud. LONGER: 07-12-9-908-142, 70 mm
07-11-9-908-385; 07-11-9-903-436 STI SHR M 10 x 35 SN 4
07-11-9-908-391 10 x 55. Appears to be obsolete; probably
replaced by 07-12-9-908-177...???
11-11-1-257-397 275 mm cylinder stud, 10 x 1.5 mm
11-11-1-265-195 297 mm cylinder stud; used at right side, rear,
both, 10 x 1.5 mm
46-71-1-230-475; -762 long threaded at both ends studs used at footrest
M12 x 1.5 thrds
46-71-1-230-762, engine mount stud, 306 mm long
46-71-2-311-725, engine mount stud, 315 mm long
46-71-1-230-475, engine mount stud, 327 mm long
Common?? screws, can be slotted or phillips, EVEN IF codes say other type
07-11-9-907-701 special screw used at fairing vents, really a
size 3, but book says B2.9 x 6.5
07-11-9-928-432; -130; -103 M4 x 16 SK SHR, screw used at fairing
vents
07-11-9-907-603 3 x 10 LIN SHR see next line
07-11-9-907-602 LIN SHR AM 3 x 8 screw used at one style of
crankcase oil breather;
NOTE: book shows -602 to be used for -603
07-11-9-907-604 LIN SHR AM 3 x 10
07-11-9-907-616 LIN SHR AM 4 x 10
07-11-9-906-435 LIN SHR 4 X 12
07-11-9-913-373 4 x 10 ZYL SHR AM
07-11-9-919-381 4 x 12 ZYL SHR AM
07-11-9-901-703 4 x 12 LIN SK SHR
07-11-9-901-720; 07-11-9-928-439 SHR AM 4 x 20 phillips
07-11-9-907-639 LIN SHR 5 x 10 used at seat side rail
07-11-9-907-627 LIN SHR AM 5 x 12
07-11-9-901-771 5 x 15 LIN SK SHR AM
07-11-9-906-415 SHR AM 5 x 16
07-11-9-928-485; -487; -488 5 x 15 LIN SK SHR M
replacements are 5 x 20
07-11-9-901-771 LIN SK SHR 5 x 15 used at the seat strap
07-11-9-907-631; -633 5 x 20 LIN SHR AM
07-11-9-900-810 SK SHR M 6 X 10 counter sunk allen head
used at seat hinge
46-63-1-236-414 SHR M6 x 30
Miscl. hardware:
51-14-4-034-136: This is the frame ID metal plate, come flat, you
must curve it, it fits the steering head area, is designed to be riveted in
place. These are unobtainable from BMW, AFAIK. Bob's BMW has
them, you have to stamp in your model, serial, etc.
61-12-2-302-574 solid, better construction, flip-cap cover
for the electrical accessory socket. This is a K bike part that fits.
46-31-1-244-384 UNconfirmed number for a blank plug to fill the
RT/RS large round dash holes when no voltmeter or
clock.
11-11-1-744-327 black rubber timing hole plug
46-51-1-234-785 black plastic cover for hex head of M8 bolts
52-53-1-230-313 black rubber bumper used over the seat locking rod,
that fits into the seat lock
52-53-1-232-904 round bumper with attaching tit, used at the seats
61-31-8-050-134; 63-12-1-244-378 Chrome washer, side of /5 headlight shell
61-31-8-050-136 rubber washer used with above Chrome washer
61-13-8-050-138 rubber sleeve used with above two items
07-12-9-934-318 special type of C clip used to hold seat to right frame
rail pegs
46-63-1-235-759 closed end tube-grommet/rubber/plastic?...to cover
fairing screw sharp tips
46-63-1-235-760 B 4.2-4BL MU BMW's version of Tinnerman
nut for fairings
07-11-9-902-513 BL SHR BZ 4.2 x 19 the screw used with
those Tinnerman's, above....there is a short version 4.2 x 16 #07-11-9-902-514
which is replaced by -497
07-11-9-907-944; -946 LIN BL SHR BZ 4.2 x 13 another of the screws
used with the Tinnerman's
07-11-9-902-467; -468 black phillips head sheet metal screw
07-11-9-902-441 silver colored phillips head sheet metal screw 3.5 x 16
07-11-9-902-429 phillips screw 3.5 x 16 used at fairing rubber
tunnel; replaced by -441
21-21-1-231-463 ZYL SHR special bolt for clutch. Note
that except for the R46 and R65 which use a smaller bolt, that BMW changed from
an early slot screw to Allen style. #'s for these bolts have been that
-463, and 21-21-1-242-371 and 21-21-338-680
26-11-1-230-414 special 12 point bolt, M8 x 14.5 for U-joint,
original early type that used actual split style lockwasher B-8
07-11-9-930-840. This combination is to ALWAYS be replaced by a
shorter bolt withOUT that washer, 26-11-1-242-297 13 mm length.
33-53-3-054-174 27 mm thin nut used at the swing arm
13-11-1-259-869 screw for Bing vacuum takeoff tube; -870 is the washer
13-11-1-336-900 METAL fuel T fitting
11-12-1-337-818 rubber pads used for quieting the cylinder head fins.
46-63-1-235-510 cup washer for fairing taper head sheet metal screws.
71-60-9-024-186 U shaped bolt used at cylinder crash bars, size 8
threads.
46-71-1-230-794; 46-71-1-237-759 U shaped flat clamp with one threaded end, used at
cylinder crash bars, size 8 threads. The ABOVE THREE bolt/clamp units are
used on the large SINGLE crash bar that covers both sides on the early
airheads. There is a single type, one for left, one for right, and
the clamp is 46-71-1-235-772 in chrome (now 46-71-1-230-794) and 46-71-1-237-759 in dull black
11-13-0-007-163; 11-13-1-744-329 magnetic drain plug used at transmission
11-13-0-007-162 oversize magnetic drain plug used at transmission
11-41-2-343-498 magnetic drain plug....not airhead
23-11-1-230-599 hollow breather bolt used at transmission
speedometer cable and battery -
07-11-9-905-660 special set screw, MAY have slot M4 x 6 x
3 neutral switch on /5
07-11-9-941-332 3 x 18 roll pin
07-11-9-944-651 4 x 10 roll pin
07-11-9-941-471 5 x 50 roll pin
07-11-9-941-475; 07-11-9-941-470 5 x 60 roll pin
07-11-9-941-485 6 x 16 roll pin
11-42-1-335-394 special 23 mm bolt for draining thermostat/cooler.
****Do NOT use if longer than 23 mm!!!
16-11-1-232-237 plastic washer that fits 4 mm screws
16-12-1-240-513 16 x 2 rubber O-ring
07-11-9-987-611 lock bow. clip. This bit of shaped round steel WIRE is
used to lock the balls at the shift linkage and the hydraulic damper balls.
32-72-1-230-874 knurled knob-screw, with nylon insert and captive
spring, used as throttle lock on models drilled and threaded for same.
07-12-9-948-739 3.2 rivet
07-11-9-947-201 6 x 25 rivet
46-63-1-233-909 expandable rivet used at windshield
07-11-9-949-633 A 6 x 0.4 x 10 tubular rivet used at top of fairing
area
61-13-8-080-160 Rubber boot for the speedometer cable where said
cable fits the right side rear of the
transmission
TOP
HAT SPACERS:
BMW uses various spacers that I CALL top hat spacers, and BMW
may call Thrust Sleeves.. These are spacers with a flange on one
end, hole in the middle. In airheads prior to 1985, on twin
shock models, at the rear wheel, these are used to space the axle (this is NOT
the many sizes available preload spacer that does NOT have a TOPHAT). It is common to see the stock
one be replaced by the 10.7 mm wider one that BMW supplies to move the rear end
over slightly (especially pre-1982), to allow a wider rear tire.
Rear wheel spacer, 10.7 mm width (height):
36-31-2-301-737.
36-31-4-038-142, This spacer, noted above, is the stock one, it is
typically 0.359" wide (height, usually ..with slight variances seen)...in
fact have seen them from 9.0 to 9.2 mm.
36-31-230-322. This top hat spacer was made in two styles with the SAME
part number! BOTH have a width (height) of 12.9 to 13 mm. An
early version was extra wide on the top hat portion...a diameter of 31.95 mm
nominally. The "seal' surface of this spacer measures an O.D. of
21.95 mm.
There are other top hat spacers used on the bikes. Some models of
airheads have top hat spacers at the rear swing arm adjustor area, inside,
between frame and swing arm. They are VERY similar in size to the wheel
spacer, and can, really, be interchanged.
Information on using some for wheel movement is found in articles on the wheels
on this site. Sometimes one must add flat spacers or move rear disc brake
arm slightly, etc., when dealing with certain types of tires.
23-13-1-241-484 special clutch arm (arm at rear of transmission) pin, that has a flange, and won't fly out. This is used with a clip that is part 51-23-1-864-963. These two parts replace the earlier pin that uses a C clip, that sometimes came apart due to being improperly assembled, and then a transmission ear got broken off.
Initial upload: 02/25/2003
01/22/2007: All prior revisions incorporated, and some omissions on the
Roundels straightened out ABP
02/01/2007: top hat spacer information expanded
02/13/2007: greatly increase Roundel information, edit other areas for
such as the frame ID plate.
04/02/2007: add -475 stud; edit roundels area, strictly for clarity
04/26/2007: Correct error on -082 Roundel, and add more Roundels, and
improve description on some
07/03/2007: Add information on sizes and lengths of cylinder studs.
10/24/2007: Roundel information moved to its own article, 68B, where it
will be greatly expanded
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