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Fox springs have two measurements, and for this example we will use 2.8" x 500 lbs.
The following must apply for proper spring fitment:- Each shock has a minimum and maximum TLG that fits, which is shown in the first set of charts below.- The goal is to find a spring with your desired spring rate and with a TLG that falls within the range of TLG for your shock’s model and size.- The maximum free stroke of the spring MUST be larger than the stroke length of your shock. If it is not, coil bind will occur and parts will explode.
STEP 1- Find and click on your model of shock in the accordian of Fox/Marzocchi shocks. - Find the exact size of shock your bike uses. - Write down the shortest and longest TLG lengths shown in the chart.STEP 2- Scroll down to the model of Fox spring you want.- For help deciding between an SLS spring and a Standard Steel Spring, check out our blog post. If you're not sure which you need, we recommend the Standard Steel Spring.- Refer to the right side “Commonly Used With” to quickly locate which length most likely applies. Still double check that this size fits your shock!STEP 3- Look for the spring rate you want in the chart. Some sizes have the same spring rate twice, so note that.- Look at that spring’s TLG to see if it fits within the range of your shock that you wrote down. - If your desired spring rate is listed twice, check each TLG to see which will fit.STEP 4- Make sure the spring’s stroke length is larger than your shock’s stroke length.- For example: A 65mm stroke converts to 2.6”. If a 2.8” spring’s TLG fits, then you are set since 2.8” is larger than 2.6”.- If you find a TLG that fits, but the shock’s stroke is longer than the spring’s stroke, you may not be able to use a coil shock or need to find a different spring.STEP 5- If multiple springs show to fit, choose which one you'd like to use.- A slightly shorter spring will sit farther down on the preload threads, while the longer option will sit higher on the threads.- There is no performance advantage either way, and this is just personal preference. A shorter spring will be slightly lighter, but that is all.STEP 6- Order the spring that meets all criteria and ride!
165mm (T)
40-45mm
3.947" / 100.2mm
4.485" / 113.9mm
185mm (T)
47.5-55mm
4.341" / 110.3mm
5.273" / 133.9mm
190mm
40-55mm
205mm (T)
57.5-65mm
4.735" / 120.3mm
6.061" / 153.9mm
210mm
225mm (T)
67.5-75mm
5.128" / 130.3mm
6.848" / 173.9mm
230mm
250mm
7.5 in
2 in
4.32" / 109.7mm
4.83" / 122.7mm
7.875 in
5.21" / 132.3mm
8.5 in
2.5 in
4.82" / 122.4mm
5.83" / 148.1mm
9.5 in
3 in
5.32" / 135.1mm
6.84" / 173.7mm
10.5 in
3.5 in
5.82" / 147.8mm
7.83" / 198.9mm
4.48" / 113.8mm
5.30" / 134.6mm
4.49" / 114.0mm
5.60" / 142.2mm
4.88" / 123.9mm
6.09" / 154.7mm
6.39" / 162.3mm
5.27" / 133.8mm
6.88" / 174.7mm
5.28" / 134.1mm
7.18" / 182.4mm
4.05" / 102.9mm
5.15" / 130.8mm
5.53" / 140.5mm
4.30" / 109.2mm
4.55" / 115.6mm
6.1" / 156.2mm
8.75 in
2.75 in
4.80" / 121.9mm
6.40" /162.6mm
5.05" / 128.3
7.15 in/181.6mm
5.55" / 141.0mm
8.15" / 207.0mm
4.21" / 106.9mm
5.19" / 131.8mm
4.43" / 112.5mm
5.92" / 150.4mm
5.00" / 127.00mm
5.97" / 151.6mm
5.22" / 132.6mm
6.71" / 170.4mm
5.78" / 146.8mm
6.76" / 171.7mm
6.00" / 152.4mm
7.50" / 190.5mm
803-04-180
N/A
2.0" x 550 lb - 4.45" TLG
033-22-065
803-04-181
2.0" x 600 lb - 4.45" TLG
033-22-066
803-04-182
2.0" x 650 lb - 4.45" TLG
033-22-067
803-04-183
2.0" x 700 lb - 4.45" TLG
033-22-068
Commonly used with:- 7.5" x 2.0"- 165mm(T) x 40mm- 185mm(T) x 42.5mm- 165mm(T) x 45mm- 190mm x 40mm- 190mm x 42.5mm- 190mm x 45mm
Still double check that the spring fits if your shock size is listed here!
803-04-177
803-04-343
2.4" x 300 lb - 4.28" TLG
033-22-000
803-04-178
803-04-344
2.4" x 325 lb - 4.41" TLG
033-22-001
803-04-179
803-04-284
2.4" x 350 lb - 4.38" TLG
033-22-002
803-04-186
803-04-345
2.4" x 375 lb - 4.52" TLG
033-22-003
803-04-187
803-04-285
2.4" x 400 lb - 4.6" TLG
033-22-004
803-04-188
803-04-286
2.4" x 425 lb - 4.54" TLG
033-22-005
803-04-189
803-04-287
2.4" x 450 lb - 4.74" TLG
033-22-006
803-04-190
803-04-288
2.4" x 475 lb - 4.68" TLG
033-22-007
803-04-191
803-04-289
2.4" x 500 lb - 4.67" TLG
033-22-008
803-04-192
803-04-290
2.4" x 550 lb - 4.91" TLG
033-22-009
803-04-193
803-04-291
2.4" x 600 lb - 4.97" TLG
033-22-010
803-04-184
803-04-292
2.4" x 650 lb - 4.97" TLG
033-22-011
803-04-185
803-04-293
2.4" x 700 lb - 4.97" TLG
033-22-012
Commonly used with:- 7.875" x 2.25"- 185mm(T) x 50mm- 185mm(T) x 52.5mm- 185mm(T) x 55mm- 210mm x 50mm- 210mm x 52.5mm- 210mm x 55mm- 230mm x 57.5mm
803-04-194
803-04-346
2.65" x 250 lb - 4.69" TLG
033-22-013
803-04-195
803-04-347
2.65" x 275 lb - 4.63" TLG
033-22-014
803-04-196
803-04-294
2.65" x 300 lb - 4.74" TLG
033-22-015
803-04-197
803-04-295
2.65" x 325 lb - 4.71" TLG
033-22-016
803-04-198
803-04-296
2.65" x 350 lb - 4.85" TLG
033-22-017
803-04-199
803-04-297
2.65" x 375 lb - 4.97" TLG
033-22-018
803-04-200
803-04-298
2.65" x 400 lb - 5.14" TLG
033-22-019
803-04-201
803-04-299
2.65" x 425 lb - 5.08" TLG
033-22-020
803-04-202
803-04-300
2.65" x 450 lb - 5.11" TLG
033-22-021
803-04-203
803-04-301
2.65" x 475 lb - 5.23" TLG
033-22-022
803-04-204
803-04-302
2.65" x 500 lb - 5.32" TLG
033-22-023
803-04-205
803-04-303
2.65" x 550 lb - 5.38" TLG
033-22-024
803-04-206
803-04-304
2.65" x 600 lb - 5.47" TLG
033-22-025
803-04-207
803-04-305
2.65" x 650 lb - 5.60" TLG
033-22-026
803-04-208
803-04-306
2.65" x 700 lb - 5.61" TLG
033-22-027
Commonly used with:- 8.50" x 2.50"- 205mm(T) x 60mm- 205mm(T) x 62.5mm- 205mm(T) x 65mm- 230mm x 60mm- 230mm x 62.5mm- 230mm x 65mm
803-04-210
803-04-310
2.9" x 300 lb - 5.36" TLG
033-22-028
803-04-211
803-04-311
2.9" x 325 lb - 5.24" TLG
033-22-029
803-04-212
803-04-312
2.9" x 350 lb - 5.33" TLG
033-22-030
803-04-213
803-04-313
2.9" x 375 lb - 5.54" TLG
033-22-031
803-04-214
803-04-314
2.9" x 400 lb - 5.54" TLG
033-22-032
803-04-215
803-04-315
2.9" x 425 lb - 5.64" TLG
033-22-033
803-04-216
803-04-316
2.9" x 450 lb - 5.80" TLG
033-22-034
803-04-217
803-04-317
2.9" x 475 lb - 5.85" TLG
033-22-035
803-04-218
803-04-318
2.9" x 500 lb - 5.83" TLG
033-22-036
803-04-219
803-04-319
2.9" x 550 lb - 5.85" TLG
033-22-037
803-04-220
803-04-320
2.9" x 600 lb - 5.85" TLG
033-22-038
Commonly used with:- 8.75" x 2.75"- 225mm(T) x 70mm- 250mm x 70mm
803-04-221
803-04-321
3.15" x 225 lb - 5.39" TLG
033-22-040
803-04-222
803-04-322
3.15" x 250 lb - 5.54" TLG
033-22-041
803-04-223
803-04-323
3.15" x 275 lb - 5.46" TLG
033-22-042
803-04-224
803-04-324
3.15" x 300 lb - 5.61" TLG
033-22-043
803-04-225
803-04-325
3.15" x 325 lb - 5.7" TLG
033-22-044
803-04-226
803-04-326
3.15" x 350 lb - 5.94" TLG
033-22-045
803-04-227
803-04-327
3.15" x 375 lb - 5.92" TLG
033-22-046
803-04-228
803-04-328
3.15" x 400 lb - 6.04" TLG
033-22-047
803-04-229
803-04-329
3.15" x 425 lb - 6.16" TLG
033-22-048
803-04-230
803-04-330
3.15" x 450 lb - 6.28" TLG
033-22-049
803-04-231
803-04-331
3.15" x 475 lb - 6.41" TLG
033-22-050
803-04-232
803-04-332
3.15" x 500 lb - 6.33" TLG
033-22-051
803-04-233
803-04-333
3.15" x 525 lb - 6.60" TLG
033-22-063
803-04-234
803-04-334
3.15" x 550 lb - 6.52" TLG
033-22-052
803-04-235
803-04-335
3.15" x 575 lb - 6.60" TLG
033-22-064
Commonly used with:- 9.5" x 3.00"- 225mm(T) x 72.5mm- 225mm(T) x 75mm- 250mm x 72.5mm- 250mm x 75mm
803-04-236
3.65" x 225 lb - 6.26" TLG
033-22-053
803-04-237
3.65" x 250 lb - 6.42" TLG
033-22-054
803-04-238
3.65" x 275 lb - 6.49" TLG
033-22-055
803-04-239
3.65" x 300 lb - 6.75" TLG
033-22-056
803-04-240
3.65" x 325 lb - 6.72" TLG
033-22-057
803-04-241
3.65" x 350 lb - 6.83" TLG
033-22-058
803-04-242
3.65" x 375 lb - 6.93" TLG
033-22-059
803-04-243
3.65" x 400 lb - 7.08" TLG
033-22-060
803-04-244
3.65" x 425 lb - 7.22" TLG
033-22-061
803-04-245
3.65" x 450 lb - 7.51" TLG
033-22-062
Commonly used with:- 10.5" x 3.5"
No black SLS springs available in this length.
803-04-130
2.5" x 250 lb - 4.285" TLG
039-03-011
803-04-131
2.5" x 300 lb - 4.344" TLG
039-03-012
803-04-132
2.45" x 350 lb - 4.990" TLG
039-12-011
803-04-133
2.45" x 400 lb - 4.675" TLG
039-03-014
803-04-134
2.37" x 450 lb - 4.723" TLG
039-03-015
803-04-135
2.35" x 500 lb - 4.733" TLG
039-03-016
803-04-136
2.35" x 550 lb - 4.776" TLG
039-03-017
803-04-137
2.35" x 600 lb - 4.830" TLG
039-03-018
803-04-138
2.30" x 650 lb - 4.954" TLG
039-03-019
803-04-139
2.30" x 700 lb - 5.200" TLG
039-03-100
803-04-140
2.55" x 700 lb - 5.701" TLG
039-03-009
803-04-141
2.30" x 800 lb - 5.280" TLG
039-03-101
Commonly used with:- 7.875" x 2.25"- 185mm(T) x 50mm- 185mm(T) x 52.5mm- 185mm(T) x 55mm- 210mm x 50mm- 210mm x 52.5mm- 210mm x 55mm
803-04-142
2.8" x 250 lb - 4.924" TLG
039-03-022
803-04-143
2.8" x 350 lb - 5.799" TLG
039-03-001
803-04-144
2.8" x 400 lb - 5.459" TLG
039-03-002
803-04-145
2.8" x 450 lb - 5.409" TLG
039-03-003
803-04-146
2.8" x 500 lb - 5.728" TLG
039-03-004
803-04-147
2.8" x 550 lb - 5.949" TLG
039-03-005
803-04-148
2.8" x 550 lb - 5.750" TLG
039-00-600
803-04-149
2.8" x 600 lb - 6.382" TLG
039-03-007
803-04-150
2.8" x 600 lb - 5.750" TLG
039-00-601
803-04-151
2.8" x 650 lb - 6.150" TLG
039-03-008
803-04-152
2.8" x 700 lb - 6.402" TLG
039-03-010
Commonly used with:- 8.5" x 2.5"- 205mm(T) x 60mm- 205mm(T) x 62.5mm- 205mm(T) x 65mm- 230mm x 57.5mm- 230mm x 60mm- 230mm x 62.5mm- 230mm x 65mm
803-04-153
3.25" x 250 lb - 6.468" TLG
039-09-010
803-04-154
3.24" x 300 lb - 6.126" TLG
039-03-000
803-04-155
3.25" x 300 lb - 6.476" TLG
039-09-000
803-04-156
3.25" x 350 lb - 6.689" TLG
039-09-001
803-04-157
3.25" x 400 lb - 6.634" TLG
039-09-002
803-04-158
3.25" x 450 lb - 6.760" TLG
039-09-003
803-04-159
3.15" x 500 lb - 6.600" TLG
039-00-603
803-04-160
3.25" x 500 lb - 6.909" TLG
039-09-004
803-04-161
3.15" x 550 lb - 6.400" TLG
039-00-604
803-04-162
3.25" x 550 lb - 6.929" TLG
039-09-005
803-04-163
3.25" x 600 lb - 7.114" TLG
039-09-006
803-04-164
3.19" x 650 lb - 6.815" TLG
039-09-007
803-04-165
3.19" x 700 lb - 7.130" TLG
039-09-008
Commonly used with:- 8.75" x 2.75"- 9.5" x 3.0"- 225mm(T) x 70mm- 225mm(T) x 72.5mm- 225mm(T) x 75mm- 250mm x 70mm- 250mm x 72.5mm- 250mm x 75mm
803-04-166
3.85" x 150 lb - 6.800" TLG
039-12-000
803-04-167
3.80" x 200 lb - 7.000" TLG
039-12-001
803-04-168
3.80" x 225 lb - 7.000" TLG
039-12-008
803-04-169
3.75" x 250 lb - 7.200" TLG
039-12-002
803-04-170
3.75" x 275 lb - 7.500" TLG
039-12-009
803-04-171
3.70" x 300 lb - 7.750" TLG
039-12-003
803-04-172
3.70" x 325 lb - 7.755" TLG
039-12-010
803-04-173
3.70" x 350 lb - 7.750" TLG
039-12-004
803-04-174
3.65" x 400 lb - 7.750" TLG
039-12-005
803-04-175
3.65" x 450 lb - 8.100" TLG
039-12-006
803-04-176
3.64" x 500 lb - 8.250" TLG
039-12-007
Got questions? Feel free to shoot us an email or give us a call!
360-306-8827
sales@thelostco.com
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