FX R900 Tuned Black Edition .21 On-Road Nitro Engine Combo – FX660001

The FX R900 Tuned Black Edition is a premium 3.5cc (.21) competition nitro engine developed specifically for 1/8 scale on-road racing.

FX660001 is the complete R900 combo package, supplied with the R900 Tuned engine, FX EFRA 2168 exhaust and Short on-road manifold. This matched combination is designed for racers looking for maximum performance, consistency and efficiency from a complete FX power package.

R900 Tuned Competition Engine

The R900 is FX's dedicated high-performance 1/8 on-road racing engine.

It uses a 9-port configuration designed to deliver the high RPM, strong acceleration and top-end performance demanded by competition 1/8 scale on-road racing.

9-Port Design

The 9-port sleeve is one of the key differences between the R900 and FX's off-road engines.

The porting is optimised for the characteristics required by an on-road racing engine, where high RPM and maximum power are especially important.

FX lists the engine-only R900 as part number 660201, confirming the 9-port specification.

DLC-Coated Crankshaft

The R900 features a DLC-coated crankshaft.

DLC – Diamond-Like Carbon – provides an extremely hard, low-friction surface treatment that helps reduce friction and wear under the demanding conditions experienced by a high-RPM competition nitro engine.

Ceramic Rear Bearing

A ceramic rear bearing is used to help reduce rotating friction and provide smooth operation at very high engine speeds.

FX's current specification identifies the R900 as featuring 9 ports, DLC treatment, ceramic bearing and a balanced rotating assembly.

Factory Balanced

The R900's rotating assembly is factory balanced for smooth high-RPM operation.

Careful balancing helps minimise unwanted vibration and contributes to consistent performance throughout a race.

EFRA 2168 Exhaust Included

The FX660001 Combo includes the FX EFRA 2168 3.5cc on-road exhaust.

The 2168 pipe is designed specifically for high-performance 3.5cc on-road and GT nitro engines, providing a matched exhaust solution for the R900.

Short On-Road Manifold Included

A matching FX Short On-Road Manifold is also supplied.

FX's official RX8 parts listing identifies 660001 as:

R900 Engine + EFRA 2168 Muffler + Short On-Road Manifold.

This removes the guesswork from selecting a suitable pipe and manifold combination for the engine.

Designed for 1/8 On-Road Racing

The R900 has been developed specifically for 1/8 scale nitro on-road competition.

This makes it an ideal powerplant for high-end racing chassis such as the XRAY RX8 and other competition 1/8 on-road platforms.

The emphasis is on high RPM, strong top-end performance, smooth operation and race-level consistency.

Key Features

• FX Engines R900 Tuned Black Edition
• Part Number: FX660001 / 660001
• 3.5cc / .21 competition nitro engine
• Designed for 1/8 on-road racing
• 9-port engine design
• Tuned competition specification
• DLC-coated crankshaft
• Ceramic rear bearing
• Factory-balanced rotating assembly
• High-RPM on-road performance
• FX EFRA 2168 exhaust included
• FX Short On-Road Manifold included
• Complete matched engine and exhaust package
• Designed for serious competition use
• Suitable for XRAY RX8 and other 1/8 on-road racing cars
• Barcode: 8581706600012

Specifications

Brand: FX Engines
Part Number: FX660001 / 660001
Model: R900 Tuned Black Edition
Engine Type: Nitro / Glow
Displacement: 3.5cc / .21 Class
Application: 1/8 On-Road Competition
Ports: 9
Crankshaft: DLC Coated
Rear Bearing: Ceramic
Rotating Assembly: Balanced
Exhaust: FX EFRA 2168
Manifold: FX Short On-Road
Barcode: 8581706600012
Completion: Engine + Muffler + Manifold Combo

What's Included

• FX R900 Tuned Black Edition .21 Nitro Engine
• FX EFRA 2168 3.5cc On-Road Muffler
• FX Short On-Road Manifold

This is the complete FX660001 combo. The R900 engine by itself is listed separately as FX660201.

Built for Serious On-Road Racing

The FX R900 Tuned Black Edition is aimed squarely at competitive 1/8 on-road racers.

Its combination of a 9-port design, DLC crankshaft, ceramic rear bearing and balanced rotating assembly provides the specification expected from a high-end race engine. The included EFRA 2168 pipe and Short manifold also give racers a properly matched engine and exhaust combination straight from the package.

For anyone building a competition-level 1/8 nitro on-road car, the FX660001 R900 Combo provides the complete FX engine and exhaust package in one product.