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HPI Nitro Star K4.6 Engine w/Pull Start 15201

HPI Nitro Star K4.6 Engine w/Pull Start 15201
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Item #:15201

HPI Nitro Star K4.6 Engine w/Pull Start 15201

This is HPI's Nitro Star K4.6 .28 size Engine With Pullstart. This is the standard engine for the Savage SS .28 monster truck kit.


  • HPI Nitro Star K4.6 Engine w/Pull Start 15201

  • Composite construction slide valve, 3 needle carb with hand adjustable high speed needle (the stock carb settings are made flush for convenient "back to factory settings")

  • 8 port chrome plated brass sleeve

  • True ABC cylinder construction

  • Purple anodized machined aluminum heat sink head

  • Rear exhaust round port

  • Cast aluminum crankcase features heatsink fins

  • Machined pilot shaft crankshaft with collet preinstalled

  • Knife-edge billet aluminum connecting rod with dual bushings.

  • Dual stage air filter dramatically reduces intake restriction as it smoothes and straightens air flow


  • Crankcase: 3.29" (83.5mm) (from rear of case to front without shaft)

  • Height: 4.40" (111mm) (from bottom of case to the top of the head)

  • Width: 1.81" (mount flange)

  • Mount Holes: 1.42" (measured from center to center width)

  • Mount holes: .82" (Between holes front and back)

  • RPM: Max 39,000 RPM

  • Horsepower: 2.9 @ 35,000 RPM

  • Crankshaft diameter: 5mm (clutch bell area)

  • Crankshaft diameter: 6.7mm (threaded portion)

  • Crankshaft screw: 3 x 12mm caphead screw

  • Capacity: 4.60cc (.28 ci)


  • Nitro Star .28 (4.6) glow engine

  • Glow Plug - HPI R5 cold plug (HPIG1504 for a replacement)

  • Dual Stage Air Filter (HPIC7198 for replacement)

  • Instructions and parts break down


  • Glow fuel

  • Glow starter

  • Vehicle requiring a rear exhaust .28 engine.

  • Tuned pipe

  • Manifold


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