XRAY rates its 1/10 off-road springs by paint dots — more dots means stiffer — and the spring family changed with each buggy generation, so match the section below to your car. Linked springs go to that exact part at AMain. Rates in lb/in are shown where XRAY has published them.
XB2'25–'26 Conical Springs
The current XB2 carpet and dirt editions run big-bore conical springs: 42.5 mm front, 57.5 mm rear. Carpet kits ship with softer dots than dirt kits.
Front — 42.5 mm
| Spring | Part # |
|---|---|
| 1 Dot | #368381 |
| 2 Dots | #368382 |
| 3 Dots | #368383 |
| 4 Dots | #368384 |
| 5 Dots | #368385 |
Rear — 57.5 mm
| Spring | Part # |
|---|---|
| 1 Dot | #368481 |
| 2 Dots | #368482 |
| 3 Dots | #368483 |
| 4 Dots | #368484 |
| 5 Dots | #368485 |
XB2'24 Springs (42 mm / 57 mm)
Front — 42 mm
| Spring | Rate (lb/in) | Part # |
|---|---|---|
| 1 Dot | — | #368191 |
| 2 Dots | 3.83 | #368192 |
| 3 Dots | 3.99 | #368193 |
| 4 Dots | 4.14 | #368194 |
| 5 Dots | — | #368195 |
Rear — 57 mm
| Spring | Rate (lb/in) | Part # |
|---|---|---|
| 2 Dots | 2.27 | #368292 |
| 3 Dots | 2.43 | #368293 |
| 4 Dots | 2.53 | #368294 |
Earlier XB2 / XB4 Springs (C-Rated)
Older XB2 generations and the XB4 through '24 use the classic linear springs marked with a spring constant (C) and dots.
Front
| Spring | C | Rate (lb/in) | Part # |
|---|---|---|---|
| 1 Dot | — | 3.28 | #368183 |
| 2 Dots | C=0.65 | 3.71 | #368184 |
| 3 Dots | C=0.72 | 4.11 | #368185 |
| 4 Dots | C=0.80 | 4.57 | #368186 |
Rear
| Spring | C | Rate (lb/in) | Part # |
|---|---|---|---|
| 1 Dot | C=0.35 | 2.00 | #368284 |
| 2 Dots | C=0.40 | 2.28 | #368285 |
| 3 Dots | C=0.45 | 2.57 | #368286 |
| 4 Dots | C=0.50 | 2.86 | #368287 |
XB4'25+ Conical Springs
The current XB4 uses its own longer conical springs (49 mm front / 67 mm rear, dot-rated 1–5). Purchase links are available for the 2-dot sets:
| Spring | Part # |
|---|---|
| Front 49 mm — 2 Dots | #368392 |
| Rear 67 mm — 2 Dots | #368492 |
Other 1/10 Off-Road Spring Charts
Running something else? See the TLR 22X & 22-series chart, the Team Associated 1/10 chart, or the HB Racing 1/10 chart.
Part numbers from XRAY's official spare parts lists; published rates cross-checked against PetitRC's big-bore spring database. Some links above are affiliate links that support the site.
