K = 2009	
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http://www.gasgasmuseum.com/
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The letter in the middle of the Vin Number is relative to the year,
 Sounds like you have an 04 if it has an 'E' in it 
 I have an 06 and that has a 'G' in it.
 This is cut and pasted from Trialspartsusa website, Hope it helps!
 2004~2007
 Example: VTRGG 3002 E054 9955
 VTR = International manufacturers code. VTR = GasGas 
 GG = Trial model (Company code to identify model EC = Enduro & MX, FS = Four Stroke, WD = Quads)
 3002:
 30 = 300 model.
 02 = (02 = year of Europe homogulation N/A USA)
 E054: 
 E = 2004 ALPHA CODE FOR MODEL YEAR. 
 05 = Manufacture month (5TH month) May.
 4 = Year of manufacture 2004.
 9955 = sequential chassis number. (9,955th built in this year.)
?Alpha? model year codes Model engine size codes
 E = 2004 12 = 125cc
 F = 2005 20 = 200 model (175cc)
 G = 2006 25 = 250cc
 H = 2007 28 = 280 model (272cc)
 30 = 300cc
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TRIAL MODEL CHASSIS NUMBERS
1993~2003
Example: VTRGG 2800 0200 9955 
VTR = International manufacturers code. VTR = GasGas 
GG = Trial model (Company code to identify model  EC = Enduro & MX, FS = Four Stroke, WD = Quads)
2800 = 280 model, year 2000 
0200:
02 = Manufacture month. (2ND month) February. 
00 = Year of manufacture 2000. 
9955 = sequential chassis number (9,955th built in this year.)
2004 and newer (after July 2003)
Example: VTRGG 3002 D093 9955
VTR = International manufacturers code. VTR = GasGas 
GG = Trial model (Company code to identify model  EC = Enduro & MX, FS = Four Stroke, WD = Quads)
3002:
30 = 300 model.
02 = (02 = year of Europe homogulation N/A USA)
D093: 
D = 2003 ALPHA CODE FOR MODEL YEAR. 
09 = Manufacture month (9TH month) September.
3 = Year of manufacture 2003.
9955 = sequential chassis number. (9,955th built in this year.)
?Alpha? model year codes                  Model engine size codes
D = 2003		J =  2008				12 = 125cc
E = 2004		
K = 2009				20 = 200 model (175cc)
F = 2005		L =  2010				25 = 250cc
G = 2006		M = 2011			28 = 280 model (272cc)
H = 2007		N =  2012			30 = 300cc
http://www.google.com/url?sa=t&rct=...eU_t62gHyzfAvnsrw&sig2=rpGMTIHkow_5GZFWxzGYaw
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