These big-bore springs fit the Kyosho Inferno MP10 family and the new Inferno MP11 — the MP11 runs the same spring lineup, so the chart below covers both cars. For guidance on which springs to use on which cars and with which shock towers, see Kyosho’s factory chart at the bottom of this page.
70mm Springs
| Color | Coils | Wire (mm) | Part # |
|---|---|---|---|
| Orange | 7.5 | 1.4 | #IF350-7514 (opens in new tab) |
| Light Blue | 7 | 1.4 | #IF350-714 (opens in new tab) |
| Gray | 6.5 | 1.4 | #IF350-6514 (opens in new tab) |
| Light Purple | 8 | 1.5 | #IFS001-815 (opens in new tab) |
| Red | 7.5 | 1.5 | #IFS001-7515 (opens in new tab) |
| Blue | 7 | 1.5 | #IFS001-715 (opens in new tab) |
72mm Springs
| Color | Coils | Wire (mm) | Part # |
|---|---|---|---|
| Brown | 8.5 | 1.6 | #IFS005-8516 (opens in new tab) |
| Black | 8 | 1.6 | #IFS005-816 (opens in new tab) |
| Navy Blue | 9 | 1.6 | #IFS005-916 (opens in new tab) |
78mm Springs
| Color | Coils | Wire (mm) | Part # |
|---|---|---|---|
| Orange | 8.5 | 1.4 | #IFW457-8514 (opens in new tab) |
| Light Blue | 8 | 1.4 | #IFW457-814 (opens in new tab) |
| Gray | 7.5 | 1.4 | #IFW457-7514 (opens in new tab) |
81mm Springs
| Color | Coils | Wire (mm) | Part # |
|---|---|---|---|
| Light Purple | 9 | 1.5 | #IFS002-915 (opens in new tab) |
| Red | 8.5 | 1.5 | #IFS002-8515 (opens in new tab) |
84mm Springs
| Color | Coils | Wire (mm) | Part # |
|---|---|---|---|
| Light Blue | 8 | 1.4 | #IS106-814 (opens in new tab) |
| Gray | 7.5 | 1.4 | #IS106-7514 (opens in new tab) |
| Blue | 8 | 1.6 | #IS106-816 |
85mm Springs
| Color | Coils | Wire (mm) | Part # |
|---|---|---|---|
| Light Purple | 10 | 1.5 | #IFS003-1015 (opens in new tab) |
| Red | 9.5 | 1.5 | #IFS003-9515 (opens in new tab) |
| Blue | 9 | 1.5 | #IFS003-915 (opens in new tab) |
86mm Springs
| Color | Coils | Wire (mm) | Part # |
|---|---|---|---|
| Brown | 11 | 1.6 | #IFS006-1116 (opens in new tab) |
| Black | 10.5 | 1.6 | #IFS006-10516 (opens in new tab) |
95mm Springs
| Color | Coils | Wire (mm) | Part # |
|---|---|---|---|
| Orange | 11 | 1.4 | #IFS004-1114 (opens in new tab) |
| Gray | 10.5 | 1.4 | #IFS004-10514 (opens in new tab) |
| Gray | 10 | 1.4 | #IFS004-1014 (opens in new tab) |
Shock Rebuild Parts (MP10 & MP11)
The springs above are only half of a shock rebuild. These are the seals, pistons, shafts, bodies and oil Kyosho lists for the same big-bore shocks, so you can refresh a set while you have them apart. Part numbers come from Kyosho’s official MP11 spare-parts list; the MP10 family shares them.
Seals, o-rings & consumables
| Part | Part # |
|---|---|
| O-ring, 1.9x3.4mm (10) | #IFW140-06 (opens in new tab) |
| HC diaphragm, big shock (4) | #IF346-09 (opens in new tab) |
| Shock end set | #IF346-05D (opens in new tab) |
| Shock cap bushings (4) | #IF346-07B (opens in new tab) |
| Steel shock bushing (4) | #IF346-04 (opens in new tab) |
| Shock boots (4) | #IFW154 (opens in new tab) |
| O-ring set (MP11) | #IFW140-05B |
Shock oil
| Part | Part # |
|---|---|
| Silicone shock oil, 300–850 cSt (80cc) | #SIL series (opens in new tab) |
Pistons
| Part | Part # |
|---|---|
| Shock piston, 1.5 × 5 hole (2) | #IF347-155B (opens in new tab) |
| Shock piston, 1.4 × 5 hole (2) | #IF347-145B (opens in new tab) |
Shafts, bodies & caps
| Part | Part # |
|---|---|
| Shock shaft, 57mm (2) | #IF484-02 (opens in new tab) |
| Shock shaft, 66mm (2) | #IS215-02 (opens in new tab) |
| HD coating shock body, L=50 (2) | #IF626-01 (opens in new tab) |
| HD coating shock body, L=58 (2) | #IS215-01 (opens in new tab) |
| Threaded big shock cap set (4) | #IF470-02B (opens in new tab) |
| Shock adjust dial, black (2) | #IF470-03BKB (opens in new tab) |
| Complete shock set, L=50 (2) | #IF626B (opens in new tab) |
Kyosho also offers the IF347 big-bore piston in other hole and thickness combinations as tuning options beyond the two listed above.
Reference: Kyosho MP10 TKI2 Spring Chart (2021)
Kyosho’s own factory chart, which answers a different question than the list above. Rather than what to buy, it shows which spring belongs on which shock — pairing each part number with its shock stay, shock length (47/50/55/58 mm), wire diameter, active coil count, and color, and marking which springs ship as standard on the MP10 and MP10 TKI2.
