High Power Model Rocketry

Yank IRIS 4"

Yank IRIS 4" - Main image
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$92.69 $123.59 In stock

The 4" IRIS Kit includes our LOC in ring/fin system and a sleek 4:1 nose cone! A perfect choice for level 1 AND level 2 certifications in the same Rocket, simply add an electronics bay for dual deployment flights. The IRIS sports a 54mm motor mount and will accept a wide range of motors. Want to fly smaller? Adapt down easily and quickly with our LOC-N Ring adapters. This is certainly a do-it-all rocket! 

IRIS4 Instructions

IRIS4 Rocksim

Complexity: Intermediate-Advanced 
Diameter: 4″
Height: 77"
Weight: 5.5lbs.
Motor Mount: 54mm with LNR Compatibility
Parachute Size: 50″ Ripstop Nylon
Shock Cord Type: NW-20 20' 3/8″ Nylon with sewn loops
Shock Cord Mount: SCM-3 Eyebolt
Fin Thickness: 1/4″
Ring Thickness: 1/4″ 
Rail Buttons: 1010
Vinyl Decal: Logo only

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Ellie ★★★★★

The 4:1 nose cone on this thing is way sleeker than the plastic one I used on my last build, and the LOC ring and fin setup went together with almost no sanding. Flew it on an H motor for my level 1, and I'm already planning to drop in an electronics bay for dual deploy on the level 2 attempt.

Jacob Z. ★★★★★

Built the IRIS as my first level 1 rocket and the ring fin system made the airframe surprisingly stiff without much added weight. The 4:1 nose cone slices through the air clean and the kit’s flexibility means I can just drop in an electronics bay later for level 2 dual deploy, which is exactly what

Victoria D. ★★★★★

The 4:1 nose cone really streamlines the profile, and swapping in an electronics bay for dual deploy was straightforward for my upcoming L2 attempt. The ring fin system feels rock solid on the rail, and the whole kit gives you a lot of flexibility without breaking the bank.