Yamaha TRX850 Enthusiasts Forum

1. Model Code Number Data: XX0-X000X-X0-X0
The first three digits within the general part number structure are model designation numbers.
Within this three-digit group, two numbers may be replaced with letters.
The major portion of letter substitution will occur with the second position of this three-digit
group (i.e.: 0X0-00000-00-00). This letter has no other significance other than model
identification. The model identification indicates the original model in which the part was
used, i.e.:
1A0-00000-00-00 Identifies RD 400 model
2A0-00000-00-00 Identifies XS 400 D model
3A0-00000-00-00 Identifies GS 340 model

2. Basic part number data: XX0-X000X-X0-X0
The second group of five digits is the actual parts group identification number (i.e. 11631 -
piston; 11311 - cylinder etc.). A «W» substituted in the first position of this five-digit group
(000-W0000-00-00) indicates a factory assembled kit which differs in content from the
original assembly used in production (i.e. 2M0-W0046-00-00 – Rear Break Pad Ass’y). The
first three digits of this five-digit group (000-XXX00-00-00)indicates the general sections and
areas of the models. The fourth and fifth digits of this group (000-000XX-00-00) indicates
the specific part within these general sections and areas. In the case of number overflow, a
letter will be substituted in the fifth digit position of this five-digit group (i.e. 1T4-2814A-00-
00 – Wire Tool).

M.V. wrote:Found this while doing a little sluething for spare parts, may be handy!

http://www.tangedal.no/XJ/PNumbers.pdf

I found this interesting:

1. Model Code Number Data: XX0-X000X-X0-X0
The first three digits within the general part number structure are model designation numbers.
Within this three-digit group, two numbers may be replaced with letters.
The major portion of letter substitution will occur with the second position of this three-digit
group (i.e.: 0X0-00000-00-00). This letter has no other significance other than model
identification. The model identification indicates the original model in which the part was
used, i.e.:
1A0-00000-00-00 Identifies RD 400 model
2A0-00000-00-00 Identifies XS 400 D model
3A0-00000-00-00 Identifies GS 340 model

2. Basic part number data: XX0-X000X-X0-X0
The second group of five digits is the actual parts group identification number (i.e. 11631 -
piston; 11311 - cylinder etc.). A «W» substituted in the first position of this five-digit group
(000-W0000-00-00) indicates a factory assembled kit which differs in content from the
original assembly used in production (i.e. 2M0-W0046-00-00 – Rear Break Pad Ass’y). The
first three digits of this five-digit group (000-XXX00-00-00)indicates the general sections and
areas of the models. The fourth and fifth digits of this group (000-000XX-00-00) indicates
the specific part within these general sections and areas. In the case of number overflow, a
letter will be substituted in the fifth digit position of this five-digit group (i.e. 1T4-2814A-00-
00 – Wire Tool).

So, essentially, if the 5 digits in the middle are the same, say a TRX mastercylinder part number 3GM-W2587-50(-00) & a 2003 R1 Mastercylinder part number 4SV-W2587-10-00, they should be interchangable...

I think...

The -10 & the -50 indicate that they are revisions or slightly different models though, so they may not be exact.

Kayla wrote:

M.V. wrote: Well, 3GM is the code for the FZR1000 EXUP and 4SV is the code for the Thunderace. The FZR master cylinder is 5/8" and the Thunderace one is 14mm...

I think you're barking up the right tree, but the middle sequence only tells you the parts group, not the actual part. If you were in a warehouse, for example, you'd go to the 'W2587/master cylinder' section and then look for the '3GM' box for a TRX part or the '4SV' box for an R1 part.

M.V. wrote:

Kayla wrote:

M.V. wrote: Well, 3GM is the code for the FZR1000 EXUP and 4SV is the code for the Thunderace. The FZR master cylinder is 5/8" and the Thunderace one is 14mm...

I think you're barking up the right tree, but the middle sequence only tells you the parts group, not the actual part. If you were in a warehouse, for example, you'd go to the 'W2587/master cylinder' section and then look for the '3GM' box for a TRX part or the '4SV' box for an R1 part.

Ah, so they could still be different parts... I make 5/8ths near enough to 16mm...

Kayla wrote: They are different parts