Free US shipping on every order · Order by 3:00 PM ET Mon–Fri, ships same day

Inventory updated a few minutes ago

Send It RC
Track Order

Home / HPI / Nitro/Gas Engine Parts / HPI1447

Underhead, F4.6 - HPI
HPI1447

Underhead, F4.6 - HPI

HPI Nitro/Gas Engine Parts
$43.93
Out of stock
Added ✓

30-day returns · Secure checkout by Stripe · We accept Visa, Mastercard, American Express, Discover, Apple Pay, Google Pay and Link

Whippy
Whippy checked: this one just sold out — check back soon.

About this part

Underhead for the F4.6, made by Hobby Products Intl. Check the fits list before you bolt it in. FITS: HPI Nitro Hellfire, Helfire SS HPI Nitro SAVAGE 21, 25, SS, or 4.6 HPI Nitro Savage X, Savage X 4.6 HPI Nitro Trophy

Fits

HPI Nitro Hellfire, Helfire SSHPI Nitro SAVAGE 21, 25, SS, or 4.6HPI Nitro Savage X, Savage X 4.6HPI Nitro Trophy
⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov

More parts for the HPI Nitro Hellfire, Helfire SS

HPI87193

Bevel Gear Differential Conversion Set, 4 Bevel for Savage - HPI

$17.99Only 3 left
HPIB085

Bearing, 8x16x5mm, for Savage 21 (2) - HPI

$11.99Only 2 left
HPI87151

Clutch Shoe and Spring Set for Savage 25 RTR - HPI

$19.09Only 2 left
HPI1426

Cover Plate for F4.1 - HPI

$22.99Only 2 left
HPI87194

Differential Shaft, 4x27mm, 4 Bevel Gear for Hellfire (4) - HPI

$13.99Only 1 left
HF11AF08

Front Gearbox Input Support, Aluminum for HPI Hellfire - Hot Racing

$15.99In stock
HF11AR08

Rear Gearbox Input Support, Aluminum for HPI Hellfire - Hot Racing

$15.99In stock
HPI86517

Front Brake Cam B, HF - HPI

$14.99Only 1 left
HPI86530

Center Bulkhead Brace for Hellfire - HPI

$13.99Only 1 left
HPI85516

Chassis Brace, HF - HPI

$12.99Only 2 left
HF156P

Damper Pistons, for HPI Hellfire - Hot Racing

$11.29In stock
HF0807

Front Lower Suspension Mount Set, 8mm Heavy-Duty - Hot Racing

$14.99In stock

All 45 parts for the HPI Nitro Hellfire, Helfire SS →

More HPI Nitro/Gas Engine Parts

HPI107829

One-Way Bearing, 14mm Hex for Pullstart/Rotostart - HPI

$21.99In stock
HPI1428

Pull Start Assembly, 21bb/S25 for F4.1bb - HPI

$26.99Only 2 left
HPI160410

Glow Plug, Medium B5 for 0.18 to 0.28ci, 3 to 4.7cc, 16% to 25% Nitro - HPI

$18.29In stock
HPI109535

Back Plate Set, Nitro Start (G/F Series) - HPI

$30.99Only 1 left
HPI107828

Pullstart, 14mm Hex, G/F Series - HPI

$27.99Only 1 left
HPI87104

Starter Shaft, 225mm without O-Ring - HPI

$14.99In stock
HPI15170

Throttle Arm/Nut Set, Nitro Star T-15 - HPI

$11.99Only 1 left
HPI120277

Back Plate, Roto Start V3 14mm - HPI

$29.18Out of stock
HPI160243

Starter Shaft, Rotostart 3, 225mm - HPI

$17.22Out of stock
HPI15130

Starting Pin/Pressure Spring, Nitro Star T-15 - HPI

$11.19Out of stock

All 11 HPI Nitro/Gas Engine Parts →