| PRCR0138 Challenger 55 Tooth Spur Gear | 55 |
| PRQS8003 Gas Challenger and Dragster Small Spur Gear Holder | |
| QS2073 Spur gear holder | 55 |
| QS2074 Spur gear 55 tooth | 55 |
| QS2075 Spur gear 54 tooth | 54 |
| QS2076 Spur gear 53 tooth | 53 |
| QS2077 Spur gear 52 tooth | 52 |
| QS2078 Spur gear 51 tooth | 51 |
| QS2079 Spur gear 50 tooth | 50 |
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