Gas Gas Tech

Professional tuner and 'Trials Competition' writer Jon Stoodley has very kindly stepped up to the plate to answer your questions. If you're having problems, or need some advice just send an email to Jon. If it's something that could be useful to others, we'll post it on the site.

Jim Snell of TrialsPartsUSA (Rising Sun Imports) has provided a wealth of information for this site. Many Trials bike owners find it difficult to find 'definitive' information on what's good and bad for their machines. Jim has given us the official Gas Gas recomendations.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
62.
63.
64.
65.
66.
67.
68.
69.
70.
71.
72.
73.
74.
75.
76.
77.
78.
79.
80.
81.
82.
83.
84.

 

 

SPECIAL ARTICLES
TIRE CHANGING TIPS - Jon Stoodley

 

JIM SNELL'S JETTING GUIDELINES
JETTING GUIDELINES FOR MACHINES FROM 1992-2002 - Jim Snell
TXT70 Carburetor setup - Jim Snell (PDF Document)

 

 

GAS GAS TXT PRO DIAGRAMS

 

GAS GAS RECOMMENDATIONS
Spark Plug
NGKBP5RES, Champion RN11YC, Bosch Platinum WR9DP
Trans/Clutch Oil
Always 5W30 (Not 10W40), 350cc for the Pro, 650cc for other models, normal motor oil (Castrol/Penzoil etc). It is not recommended to use synthetic oil.
Gasoline
95 Octane minimum. No alcohol type blends. (Jim uses Sunoco purple 115 octane 20% to Shell unleaded premium 80%).
Premix
Between 80:1 and 100:1
Brake Fluid
DOT 4 is standard. DOT 5 is fine. (All higher numbers mix with lower numbers).