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Discussion Starter · #1 ·
Hi again- It seems that I am the only one that posts to this forum...is there a better Harley forum than this one? Ok here is my question ... The '79 Sporty I bought I think is a XL ..what is the difference between XL, XLH, and XLCH? Can I find out by the VIN? Thanks again
 
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Frame ID Numbers - 1970-1980
Motorcycle Serial Numbers
Vehicle Identification Number (V.I.N.) is located
on the engine crankcase and is the same as the
number located on frame steering head.

Example: 3A 13478 H7
3A = Model Designation
3A = XLH
4A = XLCH
7F = XLCR
2G = XLT
4E = XLS


13478 = Sequential Number

H = Decade Code
H = 1970 thru 1979
J = 1980 only

7 = Model Season
0 = 1970
1 = 1971
2 = 1972
3 = 1973
4 = 1974
5 = 1975
6 = 1976
7 = 1977
8 = 1978
9 = 1979


--------------------------------


Crankcase Identification Numbers
Numbers located on both left and right crankcase
halves.

XL Models: Left Case - Inside, Primary Compartment
Right Case - Outside, Near Oil Pump

Example: 781 321 007

7 = Engine Designation
7 = 1000cc Iron XL
16 = XR-1000
17 = 883cc Evolution XL
18 = 1100cc Evolution XL
19 = 1200cc Evolution XL
20 = 1340cc Evolution, California (1988 - *)
21 = 883cc Evolution XL, California (1988 - *)
22 = 1200cc Evolution XL, California (1988 - *)

81 = Model Year

321 = Day of Production
001 = Jan. 1st 182 = Jul. 1st
032 = Feb. 1st 213 = Aug. 1st
060 = Mar. 1st 244 = Sep. 1st
091 = Apr. 1st 274 = Oct. 1st
121 = May 1st 305 = Nov. 1st
152 = Jun. 1st 335 = Dec. 1st

007 = Number That Day

http://www.sportster.org/tech/
 
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