• 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:

This engine can be converted from recoil to Roto Start with HPIP7126. If the modeler only wants a recoil backplate, they can purchase HPIG7127