| Engines & Upgrade Kits
| | Price | Bore and Stroke | Max Power @ RPM | Max Torque @ RPM | 
50cc to 80cc Upgrade Kit | $129.00 | | | | 
50 cc 49.6 cc BN139QMB | $399.00 | 1.5366 x 1.6351 | 2.68 @ 8,000 | 2.06 lb/ft @ 6,000 | 
150 cc 149.6 cc BN157QMJ | $499.00 | 2.2616 x 2.2773 | 9.65 @ 8,000 | 6.19 lb/ft @ 6,000 | | 
250 cc 244 cc BN172MM | $1,099.00 | 2.8347 x 2.3622 | 14.75 @ 7,000 | 12.98 lb/ft @ 5,500 |
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