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Tillotson 225RS 72mm 2.835 Reinforced Racing Block
Tillotson 225RS 72mm 2.835 Reinforced Racing Block
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Tillotson 225RS 72mm 2.835 Reinforced Racing Block

Part Number: 138220002
Online Price: $139.99
Availability: In Stock.

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Description

72mm (2.835") Reinforced Tillotson Racing Block — Designed by EC Carburetors


Built with decades of racing expertise, the Tillotson 72mm Reinforced R-Series Block is engineered for maximum durability and top-level performance in Honda Clone-style engines. Originally developed by EC Carburetors for the Tillotson 225RS engine and the competitive T4 Karting Nation’s Cup, this block is the foundation of one of the most dominant 14.5ci open-class karting packages worldwide.


Key Features & Benefits:

  • Designed for Tillotson 225RS R-Series Engines: Specifically crafted to handle the power and stresses of Tillotson’s high-performance 225RS platform.
  • Heavy-Duty Reinforced Design: Features increased material thickness around the bore, pushrod galleries, and upper bolt holes, giving unmatched strength and durability compared to typical clone or Predator blocks.
  • Cast Iron Sleeve for Longevity: The durable cast iron sleeve ensures wear resistance and consistent performance under racing conditions.
  • 72mm Bore – One of the Largest Available: Allows for significant displacement increase, unlocking the full potential of the engine and enabling use of high-performance aftermarket parts.
  • Cost-Effective Upgrade: Starting with this block is often more affordable than replacing an entire engine, since many existing components like crankshaft, flywheel, coil, blower housing, cylinder head, and carburetor remain compatible.
  • Versatile Compatibility: Designed to work seamlessly with most Honda GX200/Clone and Predator engine parts, making upgrades straightforward without extensive modifications.


Why Choose the Tillotson 72mm Block?

Bigger bore engines typically require boring and sleeving stock blocks, which often lack the reinforced construction needed for high-performance durability. The Tillotson R-Series block’s robust design handles the increased stresses with ease, providing racers and engine builders with a reliable, race-proven foundation.

This block was pivotal in developing a new aftermarket ecosystem around 72mm bore engines — allowing racers to build high-performance engines that dominate competitive classes.


Compatible With:

  • Most Honda GX200/Clone parts
  • Predator engine components
  • Tillotson 225RS and R-Series engine kits


Upgrade your build with the EC-designed Tillotson 72mm Reinforced Racing Block — the proven choice for racers who demand strength, reliability, and unbeatable performance.


Learn more about the Tillotson Reinforced Blocks on our blog:
EC Tech Review: The New Tillotson Racing Blocks

FAQ

Q1: What engines are compatible with the Tillotson 72mm reinforced racing block?
A: It fits most Honda GX200/Clone and Predator engines, especially those used with Tillotson 225RS and R-Series parts.


Q2: What makes this block different from standard clone or Predator blocks?
A: The Tillotson block features extra material reinforcements around the bore, pushrod galleries, and bolt holes plus a durable cast iron sleeve, offering superior strength and longevity under high-stress conditions.


Q3: Can I reuse parts from my current engine when upgrading to this block?
A: Yes. You can typically reuse your crankshaft, flywheel, coil, blower housing, cylinder head, and carburetor. You’ll usually only need a new piston, rod, and this block for the upgrade.


Q4: Why choose a 72mm bore block?
A: The 72mm bore provides one of the largest displacement options for these engines, enabling higher horsepower and torque—perfect for competitive karting and performance applications.


Q5: Is this block suitable for racing applications?
A: Absolutely. Designed by EC Carburetors with racing experience, this block is proven in world-class karting competitions and built for aggressive camshafts, high rpm, and demanding use.


Q6: Where can I learn more about the Tillotson reinforced blocks?
A: Check out our detailed tech review here: EC Tech Review – Tillotson Racing Blocks

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