These manifolds fit all OS and OS copy four strokes from 40 - 61 size, also fits RCV 60SP and are supplied complete with lock nuts
People who bought this item also bought:

1. FS Manifold Adapter 40 - 61

2. FS Manifold Lock Nuts

3. Flex Extension 40 - 61 120mm

These manifolds fit all OS and OS copy four strokes from 65 - 91 size, also fits all RCV engines except 60SP and are supplied complete with lock nuts
People who bought this item also bought:

1. FS Manifold Adapter 65 - 91

2. FS Manifold Lock Nuts

3. Flex Extension 65 - 91 120mm

These manifolds fit all OS (except the Surpass E*) and fit all OS copy four strokes from 120 - 180 size, as well as the new RCV 1.30. They are supplied complete with lock nuts.

* The Surpass E is the only OS four stroke to have a different thread in the silencer from the thread in the cylinder head. Our manifolds have the same thread each end and therefore do not fit the silencer supplied with the E. An easy fix is to purchase an inexpensive ASP 1.20 silencer body - Four Stroke Silencers

People who bought this item also bought:

1. FS Manifold Adapter 1.20 - 1.80

2. Flex Extension 1.20 - 1.80 120mm

3. FS Manifold Lock Nuts

We are pleased to announce that we can now offer a 90 degrees knuckle manifold for the new OS 200, we have had these specially made in response to customer demand. They are supplied without lock nuts and we only have the one angle available.


People who bought this item also bought:

1. 2 Blade Aluminium Spinner

2. J'EN '4' Two Stroke Plug

These manifolds are to fit Saito 40 - 56 Engines and are supplied excluding lock nuts.
Sorry only avaliable in 90 Degree.

This manifold also fits the new Saito 62 engine.

People who bought this item also bought:

1. J'EN Hex Nut 20mm

2. 65 - 91 Knuckle Manifold

3. J'EN .37 Spare parts

These manifolds are to fit Saito 65 - 1.00, also suitable for the new Saito 115.
Engines and are supplied excluding lock nuts. Sorry only avaliable in 90 Degree.

People who bought this item also bought:

1. FS Manifold Adapter S65 - S91

2. Exhaust Deflector Medium

3. J'EN .37 Spare parts

These manifolds are to fit Saito 120 - 180 Engines (Excluding the 125) and are supplied excluding lock nuts.
Sorry only avaliable in 90 Degree.
People who bought this item also bought:

1. FS Manifold Lock Nuts

2. SAT180SQ

3. Engine Test Stand

These manifolds are to fit the Saito 125 and also the YS 1.20, 1.40, 1.60 and 1.70. Supplied excluding lock nuts.
Sorry only avaliable in 90 Degree.
People who bought this item also bought:

1. Mini Tacho

2. On Board Glow System (no Battery)

A pair of OS and OS copy four stroke manifold locking nuts (Sorry NOT available for OS 110, OS 200 or Saito).

Please state engine model and size:

People who bought this item also bought:

1. 65 - 91 Knuckle Manifold

2. 40 - 61 Knuckle Manifold

3. 120 - 180 Knuckle Manifold

Standard exhaust manifold - as supplied with the engine. For .40-.61 OS and OS copies - like ASP, also fits RCV 60SP. Supplied with lock nuts.
People who bought this item also bought:

1. 40FSSIL

2. Std Fuel Tube (3/32)

3. CM-6 Plug cap kit

Standard exhaust manifold - as supplied with the engine. For .65-.91 OS and OS copies - like ASP, also fits all RCV engines except 60SP. Supplied with lock nuts.
People who bought this item also bought:

1. 65FSSIL

2. 65 - 91 Knuckle Manifold

3. 65FSSILB

Standard exhaust manifold - as supplied with the engine. For 1.20 OS and OS copies - like ASP and new RCV 1.30. Supplied with lock nuts.
People who bought this item also bought:

1. 120FSSIL

2. FS Manifold Adapter 1.20 - 1.80

3. Blue Exhaust Silicone 12mm bore

Standard exhaust manifold - as supplied with the engine. For 1.80 ASP and other Chinese 1.80 Four Strokes. Supplied with lock nuts.
People who bought this item also bought:

1. 180FSSILB

Female/female manifold adapter for use with flexi or for joining two knuckles. For .40-.61 OS and OS copies, also fits RCV 60SP.
People who bought this item also bought:

1. 40 - 61 Knuckle Manifold

2. FS Manifold Lock Nuts

3. Flex Extension 40 - 61 120mm

Female/female manifold adapter for use with flexi or for joining two knuckles. For .65-.91 OS and OS copies, also fits all RCV engines except 60SP.
People who bought this item also bought:

1. 65 - 91 Knuckle Manifold

2. Flex Extension 65 - 91 120mm

3. FS Manifold Lock Nuts

Female/female manifold adapter for use with flexi or for joining two knuckles. For 1.20 OS and OS copies and ASP 1.80 and new RCV 1.30.
People who bought this item also bought:

1. 120 - 180 Knuckle Manifold

2. Flex Extension 1.20 - 1.80 120mm

3. FS Manifold Lock Nuts

Female/female manifold adapter for joining two knuckles. For Saito 40 - 56 Engines.
People who bought this item also bought:

1. After Run Oil

2. 2 Blade Aluminium Spinner

3. FS Manifold Lock Nuts

Female/female manifold adapter for joining two knuckles. For .Saito 65 - 91 Engines.
People who bought this item also bought:

1. S65 - S100 Knuckle Manifold

2. SAT70SQ

3. SAT120SQ

Female/female manifold adapter for joining two knuckles. For Saito 120 - 180 Engines (Excluding the 125).
People who bought this item also bought:

1. S120 - S180 Knuckle Manifold

2. 120 - 180 Knuckle Manifold

3. 40 - 61 Knuckle Manifold

To enable the use of the OS threaded products such as the flexible extensions, with a Saito or YS threaded engine manifold, we can make a female - female adapter with dual internal threads.

For example, to attach to a Saito 1.20 manifold one end and to attach an OS 1.20 sized flexible extension into the other end please state "Saito 1.20 Manifold to OS 1.20 Flex"

Please state both connections required:

People who bought this item also bought:

1. S125 Knuckle Manifold

2. On Board Glow System (no Battery)

3. 120FSSIL

Part No: X-OS72109500. 'Inside' header - male/female for use with flexi for OS and OS copies .65-.91

People who bought this item also bought:

1. 65 - 91 Knuckle Manifold

2. Flex Extension 65 - 91 120mm

3. Flex Extension 65 - 91 170mm

Part No: X-OS72109600. 'Outside' header (wider bend) - male/female for use with flexi for OS and OS copies .65-.91

People who bought this item also bought:

1. OS F Four Stroke Plug

2. Flex Extension 65 - 91 170mm

Part No: X-OS72109200. 'Inside' header - male/female for use with flexi for OS and OS copies 1.20 and ASP 1.80 and new RCV 1.30.

People who bought this item also bought:

1. FS Manifold Adapter 1.20 - 1.80

2. Flex Extension 1.20 - 1.80 120mm

3. Model Technics Supercat Four Stroke Plug

Part No: X-OS72109300. 'Outside' header (wider bend) - male/female for use with flexi for OS and OS copies 1.20 and ASP 1.80 and new RCV 1.30.

People who bought this item also bought:

1. 120 - 180 Knuckle Manifold

2. Flex Extension 1.20 - 1.80 120mm

3. FS Manifold Adapter 1.20 - 1.80

OS Flexible extension - male/male threads to suit .40/.52/.61 OS and OS copies, also fits RCV 60SP. 120mm Long
People who bought this item also bought:

1. 40 - 61 Knuckle Manifold

2. FS Manifold Adapter 40 - 61

3. FS Manifold Lock Nuts

OS Flexible extension - male/male threads to suit .40/.52/.61 OS and OS copies, also fits RCV 60SP. 240mm Long
People who bought this item also bought:

1. A.S.P. 52/61 FS Spares

2. FS Manifold Lock Nuts

3. 40 - 61 Knuckle Manifold

OS Flexible extension - male/male threads to suit .65/.70/.80/.91 OS and OS copies, also fits all RCV engines except 60SP. 120mm Long
People who bought this item also bought:

1. 65 - 91 Knuckle Manifold

2. FS Manifold Adapter 65 - 91

3. Std Fuel Tube (3/32)

OS Flexible extension - male/male threads to suit .65/.70/.80/.91 OS and OS copies, also fits all RCV engines except 60SP. 170mm Long
People who bought this item also bought:

1. OS Inside Header 65 - 91

2. FS Manifold Adapter 65 - 91

3. OS F Four Stroke Plug

OS Flexible extension - male/male threads to suit .65/.70/.80/.91 OS and OS copies, also fits all RCV engines except 60SP. 240mm Long

OS Flexible extension - male/male threads to suit .65/.70/.80/.91 OS and OS copies, also fits all RCV engines except 60SP. 330mm Long
People who bought this item also bought:

1. Exhaust Deflector Medium

2. A.S.P. 120 FS Spares

3. 2 Blade Aluminium Spinner

OS Flexible extension - male/male threads to suit 1.20 OS and OS copies plus ASP 1.80 and new RCV 1.30. 120mm Long
People who bought this item also bought:

1. 120 - 180 Knuckle Manifold

2. FS Manifold Adapter 1.20 - 1.80

3. Model Technics Supercat Four Stroke Plug

OS Flexible extension - male/male threads to suit 1.20 OS and OS copies plus ASP 1.80 and new RCV 1.30. 240mm Long
People who bought this item also bought:

1. OS Inside Header 1.20 - 1.80

2. 120 - 180 Knuckle Manifold