Description

Tillotson 225RS Engine Long Block

This long block package includes the core components of the 225RS engine: the performance-enhanced block, piston assembly, connecting rod, crankshaft, and cylinder head — all pre-assembled to Tillotson’s exact specifications. Each component is expertly machined and balanced to maximize horsepower output and ensure optimal internal performance. Whether you’re rebuilding your existing engine or upgrading from a standard unit, the Tillotson 225RS Engine Long Block offers a competitive edge you can rely on.

Engineered specifically for kart racing applications, the 225RS features a lightweight yet robust design that minimizes internal friction while delivering explosive torque and top-end speed. With its race-tuned architecture, this long block is ideal for drivers looking to push the limits while maintaining reliability over long runs. It complies with most 225RS race class regulations, making it a smart choice for competitive racers.

Save time and simplify your engine build with this ready-to-install long block, backed by Tillotson’s reputation for innovation and performance. Whether you’re entering a new season or replacing a worn-out engine, the Tillotson 225RS Engine Long Block is your gateway to championship-level performance.

Key Benefits:

• Pre-assembled racing-grade long block
• Precision-balanced crankshaft and piston system
• Durable, high-performance components
• Compliant with 225RS race class standards
• Ideal for performance rebuilds or new engine setups

Take your racing to the next level — choose the Tillotson 225RS Engine Long Block for unmatched reliability, speed, and power.

Tillotson 225RS Engine Long Block

• Does not come with spark plug as shown in picture

Long Block Break Down:

• 72mm Tillotson Block (extra webbing, bracing, and thicker material is built into the casting producing a superior block to any other)
• Bore : 72mm / 2.835″
• Crank : 55mm / 2.165″
• 265 Lift Tillotson Racing Cam (wide power band, great for mini bikes and yard-karts, equipped with compression release)
• Forged Rod with bearings
• Forged, Lightweight Racing Piston
• Tillotson Race Head (Large Ports)
• 27mm Intake Valve
• 25mm Exhaust Valve
• 26lb Valve Springs
• Heavy Duty Retainers with Automotive style keepers

CAUTION! This long block is not for inexperienced builders/drivers. These engines are shipped with NO OIL. We recommend a high quality oil designed for splash oil systems such as Thor Oil or AmsOil 4T to provide better protection. Always keep 16 ounces of oil in the engine while in use. *Block does not have tabs for mounting a fuel tank.*

Break in will be required.