Acerbis chain guide set – complete renewal of the motorcycle's chain guidance system

The Acerbis chain guide set combines two key final-drive components: a rear chain guide with a replaceable slider and a swingarm chain slider. Replacing both components at the same time renews the principal surfaces that control and support the drive chain from the front section of the swingarm through to the rear sprocket.

Both guides are exposed to continuous chain contact, vibration, sand, mud and other contaminants. They therefore wear gradually and should be inspected as normal service components. The Acerbis set provides a practical way to renew both major chain-guiding areas at once without unnecessary modification to the motorcycle.

The rear guide also uses a replaceable slider. This is the most heavily loaded wear surface and, once worn, can be replaced separately when the main guide body remains in good condition.

What the set includes

The set contains:

• rear chain guide positioned around the rear sprocket,

• swingarm chain slider.

The rear guide also features a separate replaceable wear insert.

The two components perform different jobs but work together to maintain the intended chain path during suspension movement and changing loads.

Rear chain guide

The rear guide is positioned around the rear sprocket and helps stabilise the chain as it approaches and leaves the sprocket.

Its role is particularly important during:

• hard acceleration,

• engine braking,

• jump landings,

• rapid rear suspension movement,

• deep ruts,

• rough and broken terrain.

The guide limits excessive lateral chain movement and helps keep it correctly positioned relative to the rear sprocket.

Replaceable rear-guide slider

The most heavily loaded part of the rear guide is the slider or wear insert.

The chain continuously passes across this component and gradually wears its surface.

Because the slider is replaceable, it can be renewed independently when the structural guide body remains serviceable.

This provides:

• lower future servicing costs,

• continued use of the original guide body,

• quicker replacement of the worn component,

• less unnecessary replacement of usable parts.

On the corresponding design, the slider can be replaced without splitting the chain, simplifying routine maintenance.

Swingarm chain slider

The second component in the set is the swingarm chain slider.

It is positioned around the front section of the swingarm and creates a protective sliding surface between the moving chain and the swingarm itself.

As the rear suspension moves, the geometry between the:

• countershaft sprocket,

• swingarm pivot,

• rear sprocket

changes continuously.

The chain therefore changes angle during suspension travel and repeatedly contacts the slider.

Without this protective surface, the metal chain could gradually wear directly into the swingarm.

Complete chain guidance in one set

The main advantage of the kit is the ability to renew the front and rear chain-guiding components at the same time.

This is particularly useful when:

• replacing the complete chain and sprocket set,

• both original guides are heavily worn,

• preparing the motorcycle for a new season,

• carrying out major servicing,

• restoring the complete chain-guidance system.

A new chain and sprockets work best with guiding components that are also in good serviceable condition.

Durable polyamide construction

Both components are made predominantly from polyamide, commonly known as nylon.

This material is suitable for chain-guiding parts because it combines:

• high abrasion resistance,

• mechanical strength,

• toughness,

• low weight,

• relatively low friction,

• resistance to repeated loading.

Polyamide provides an appropriate contact surface for the moving chain while tolerating the demanding environment of motocross and enduro use.

Accurate OEM-style geometry

The kit is designed for a specific motorcycle application.

The correct version matches:

• original mounting points,

• swingarm shape,

• rear-sprocket position,

• chain-path width,

• required chain geometry.

Installation therefore requires no:

• drilling,

• cutting,

• grinding,

• heating,

• other motorcycle modification.

Both components install in place of the original parts.

Why replace both guides together

The front and rear guides wear in different ways, but both interact with the same drive chain.

If both components are already substantially worn, replacing them together offers several advantages:

• chain guidance is renewed in both critical areas,

• a second service shortly afterwards may be avoided,

• a new chain does not run against heavily worn guide surfaces,

• the complete final-drive system is easier to inspect as one unit.

The set is therefore particularly practical during comprehensive chain-and-sprocket servicing.

How to identify a worn rear guide

Inspect the rear guide for:

• deep chain grooves,

• a heavily worn slider,

• cracks,

• deformation,

• impact damage,

• excessive play,

• incorrect chain travel.

If only the slider is worn and the guide body remains in good condition, the wear insert can subsequently be replaced on its own.

How to identify a worn swingarm slider

Inspect the swingarm guide for:

• deep chain grooves,

• substantial material thinning,

• cracks,

• deformation,

• wear approaching the swingarm surface.

Once the chain begins reaching the swingarm itself, expensive damage can result.

Replacing the slider in time is much simpler and less costly than repairing a worn swingarm.

Inspect during chain-and-sprocket replacement

A chain-and-sprocket change is an ideal time to inspect both guides.

Also check:

• countershaft sprocket,

• rear sprocket,

• upper and lower chain rollers,

• chain adjusters,

• chain alignment,

• chain slack.

The final drive operates as a complete system, and the condition of the guide components affects overall operation.

Correct chain slack extends guide life

A chain that is too loose can move excessively through the guides, strike them harder and accelerate wear.

A chain that is too tight can create excessive forces as the rear suspension moves.

Both conditions can affect:

• chain,

• sprockets,

• guides,

• bearings,

• countershaft.

Always set chain slack according to the motorcycle manufacturer's specified values and procedure.

Sand, mud and dust accelerate wear

Off-road riding introduces contaminants between the chain and guide surfaces.

A mixture of:

• sand,

• dust,

• mud,

• chain lubricant

can act as an abrasive paste and significantly accelerate wear.

Clean and inspect the guide components after riding.

Regular cleaning also makes cracks, deep grooves and other damage easier to identify.

Quick servicing of the replaceable slider

The rear guide's replaceable-slider construction simplifies future maintenance.

If only the wear insert needs replacement:

1. inspect the structural guide body,

2. remove the worn slider,

3. install the new insert,

4. verify free chain movement.

On the relevant version, this can be done without splitting the chain.

This is particularly practical before a race, training session or longer ride.

Straightforward installation

Application-specific geometry allows both components to fit into their original positions.

Basic procedure:

1. secure the motorcycle safely,

2. clean the guide areas,

3. remove the original components,

4. inspect the swingarm and mounting points,

5. install the new swingarm slider,

6. install the rear guide,

7. use the correct hardware,

8. tighten according to the motorcycle manufacturer's specification,

9. verify free chain movement,

10. check or adjust chain slack.

Exact procedure may vary according to motorcycle design.

For a broad range of motorcycles

The guide sets are produced for specific motorcycles.

Applications include:

• KTM,

• Suzuki,

• Honda,

• Husqvarna,

• Kawasaki,

• Yamaha,

• GAS GAS,

• Royal Enfield,

• Triumph,

• CFMOTO.

Adventure-bike applications are also available, including the Yamaha Ténéré 700.

Always verify exact fitment

The set is not universal.

Motorcycles can differ in:

• swingarm shape,

• mounting points,

• chain size and width,

• rear-sprocket position,

• rear-guide design,

• swingarm-slider profile.

Before ordering, always confirm:

• manufacturer,

• model,

• model year,

• exact version where applicable.

Use the fitment table on the product page as the deciding reference.

Main benefits

• complete set of two major chain-guiding components,

• rear chain guide,

• swingarm chain slider,

• rear guide with replaceable slider,

• worn slider can be replaced independently,

• on the relevant version the slider can be changed without splitting the chain,

• accurate OEM-style geometry,

• installs at the original mounting points,

• no motorcycle modification required,

• durable polyamide construction,

• high abrasion resistance,

• helps protect the swingarm,

• stabilises chain movement around the rear sprocket,

• ideal for comprehensive final-drive servicing.

Material

• 95% polyamide / nylon,

• 5% other materials.

Two guides, one renewed chain-guidance system

The chain requires controlled guidance not only around the rear sprocket but also where it passes across the swingarm. This set addresses both areas at the same time.

It is particularly useful during major servicing, when replacing the chain and sprockets, or whenever both original guides are already significantly worn. The replaceable slider in the rear guide also makes future maintenance more economical because the complete guide does not necessarily need to be replaced when only its wear surface reaches the end of its service life.

Regular inspection, correct chain slack and timely replacement of worn guide components help keep the complete final drive operating correctly and protect more expensive motorcycle parts from unnecessary wear.