HPI Roto-Start Back Plate: Savage X (F4.1), 21, 25

  • HPI Roto-Start Back Plate: Savage X (F4.1), 21, 25
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Model: HPI87117

Fits HPI Savage X, 21, 25, and Ofna Force 21 & 25 engines

This is the Back Plate Unit for the HPI F4.1 (which is the 4.1 engine on the Savage X), the Nitro Star BB Series & Force 21 & 25 engines from HPI, the HPI G3.0 (not HO), as well as the Force 21 & 25 from Ofna. This fits the Savage X 4.1 as well as the.21 and .25 Savage engines.

This must be used with a 12mm one-way bearing (HPI bearing 1430). If you are unsure, please measure your bearing.

Back plate unit designed for the Nitro Star BB Series engines and the Force 21/25 (roto start).
Designed for use with the Roto Start (HPI87110).
Black nylon back plate.
Steel constructed screws, hex tool, gears.
Spare parts for HPI's Roto Start System, for Nitro Star BB, or Force 21/25.

(1) Back Plate Unit
(1) 32T Gear
(1) 11T Gear
(3) M2.6 x 12mm Caphead Screws
(2) M2.6 x 8mm Caphead Screws

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