701 Yamaha Superjet Engine

Built for performance riders and freestyle enthusiasts, the 701 Yamaha SuperJet Engine from The Race Shack Marine delivers precision craftsmanship and unmatched reliability. Each engine is assembled in-house using hand-selected OEM and performance components, tailored to your exact setup.

Our 701 builds can be configured to suit any style of riding — from freeride and surf to closed-course racing. Choose your preferred crankcase, crankshaft, head design, and porting level to create the perfect powerplant for your ski. Every engine is pressure tested, fully inspected, and tuned for durability before shipment.

🔧 Build Details

Each 701 engine build includes:

• OEM Yamaha 701 bottom end (new or rebuilt)

• Precision-balanced crankshaft (new or refreshed)

• Ported or stock Yamaha 61X cylinder options

• Billet or stock head with custom dome selection

• OEM Yamaha pistons or forged performance pistons (depending on configuration)

• Assembly using all new seals, gaskets, and bearings

• Compression tested and bench-run prior to shipping

💡 Notes

• Every engine is built to order — please allow 2–3 weeks for completion.

• Short block builds do not include flywheel, stator, or electronics.

• Full assemblies are complete drop-in units.

• Cores must pass inspection if customer parts are supplied.