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HPI Racing Nitro Star F3.5 V2 Engine – 3.5cc Race-Legal Big-Block Nitro with Pull Start

HPI Racing Nitro Star F3.5 V2 Engine – 3.5cc Race-Legal Big-Block Nitro with Pull Start

Regular price $157.49 USD
Sale price $157.49 USD Regular price
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SKU: HPI111600
UPC: 4944258022970
Brand: RC Hop Up Parts
Product Type: Engines

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Description

Overview

The HPI Racing Nitro Star F3.5 V2 Engine is a powerful 3.5cc (.21-class) big-block nitro engine designed for drivers who want strong acceleration, high top speed, and race-legal performance straight out of the box. Featuring updated internal and external design improvements, the V2 version delivers better cooling, reduced weight, and improved reliability for both racing and high-performance bashing.

This engine uses a rear exhaust layout and a slide carburetor, making it compatible with a wide range of 1/8 scale nitro buggies and truggies. The pull-start system incorporates a durable one-way bearing housed in a reinforced 14mm hex, ensuring dependable and easy starting.

Key Features

  • Updated V2 crankcase and heatsink design
  • Larger heatsink fins for improved cooling
  • 22g lighter than previous version
  • 4mm taller profile for enhanced airflow
  • Rear exhaust configuration
  • Tough pull starter with reinforced one-way bearing
  • True ABC construction (chrome-plated brass piston/cylinder)
  • Slide-type carburetor with two-needle adjustment

Performance Benefits

  • Approximately 2.5 horsepower output
  • Explosive acceleration and strong mid-range power
  • High top-end speed capability
  • Race-legal .21 displacement
  • Improved cooling efficiency
  • Reduced fuel vaporization with composite carb

Usage Notes

  • Best Used With RC Scale(s): 1/8 scale nitro buggies and truggies
  • Engine supplied fully assembled with pull start installed
  • Exhaust system, clutch, flywheel, and glow plug not included
  • Proper break-in required before full-power operation
  • Compatible with standard .21 engine mounts and exhausts

Technical Specs

  • Manufacturer: HPI Racing
  • Part Number: 111600
  • Displacement: 3.5cc
  • Engine Class: .21 (race-legal)
  • Power Output: ~2.5 HP
  • Configuration: Big-block, rear exhaust
  • Carburetor: Slide type, two-needle
  • Internals: True ABC (chrome-plated brass)
  • Starting System: Pull start with one-way bearing

What's Included

  • 1x HPI Racing Nitro Star F3.5 V2 Engine with Pull Start

Summary

Race-legal .21 big-block performance with V2 design improvements — the HPI Racing Nitro Star F3.5 V2 delivers serious nitro power for 1/8 buggy and truggy builds.

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