Description
Benelli TNT125 TNT135 Exhaust Link Pipe fitment overview
Benelli TNT125 TNT135 Exhaust Link Pipe is for riders who want to connect or replace the mid/link section of the exhaust system on the small Benelli TNT family. This is not a universal decoration part: the important points are pipe diameter, header fitment, silencer inlet size, bracket alignment, clearance around the swingarm, gasket condition and whether the motorcycle is a TNT 125 or TNT 135 market version.
The Benelli TNT 125, also known in some markets as Tornado Naked T 125, uses a compact air-cooled single-cylinder engine, EFI, five-speed gearbox, chain final drive and 12-inch wheels. Official Benelli specifications list 8.2 kW at 9,500 rpm and 10 Nm at 7,000 rpm for the 125. The TNT 135 version uses a closely related small-displacement platform, but details can vary by country and production year. That is why this product page focuses on practical fitment checks rather than vague promises.
Before ordering: what to check on your bike
Small exhaust parts are sensitive to small differences. A few millimetres at the pipe joint or a slightly different bracket angle can decide whether installation is clean or frustrating. Before ordering a Benelli TNT125 TNT135 Exhaust Link Pipe, inspect your current exhaust and compare it with the product photos and dimensions.
| Check | Why it matters | What to measure or inspect |
|---|---|---|
| Header outlet diameter | The link pipe must slide or clamp correctly at the front joint. | Measure outside diameter and note whether a gasket sleeve is used. |
| Silencer inlet diameter | The rear connection must match the muffler or adapter. | Measure the muffler inlet and compare with the pipe outlet. |
| Mounting bracket position | A forced bracket can crack or leak after vibration. | Check bolt hole alignment without tightening everything first. |
| Clearance | Heat and vibration need space. | Inspect swingarm, brake hose, plastic trim, rider footpeg and rear shock area. |
| Road legality | Noise and emissions rules vary by country. | Confirm whether your full exhaust setup is legal for road use. |
Compatibility notes for TNT 125 and TNT 135
The TNT 125 and TNT 135 are similar enough that many riders search for the same exhaust link pipe, but they are not always identical in every market. Model year, emissions version, original silencer and previous modifications can change what is fitted to the motorcycle. A Benelli TNT125 TNT135 Exhaust Link Pipe should be chosen by real measurement, not only by model name.
If the bike is still completely stock, take photos of the current header joint, muffler joint and mounting points before removing anything. If the bike already has an aftermarket exhaust, do not assume the old link pipe dimensions are original. Previous owners often fit adapters, clamps, sleeves or non-standard silencers.
For tuning context around this motorcycle, read our Benelli TNT 125 derestriction guide. If you want a dedicated fitment article for this part, the Benelli TNT125 and TNT135 exhaust link pipe fitment guide explains the same checks in article format. Riders comparing small 125 exhaust work may also find the Malaguti Drakon 125 sport exhaust guide useful because the same rules apply: sealing, support and heat clearance matter more than noise.
Installation method
Install the pipe on a cold motorcycle. Support the bike securely, loosen the existing exhaust from front to rear and avoid forcing the silencer while one joint is still tight. A clean Benelli TNT125 TNT135 Exhaust Link Pipe installation should sit naturally before final tightening.
- Let the engine and exhaust cool fully.
- Inspect the old clamps, springs, gaskets and mounting bolts.
- Loosely fit the link pipe at the header side first.
- Connect the silencer side without forcing the angle.
- Align brackets and confirm clearance around the swingarm and bodywork.
- Tighten gradually from front to rear.
- Start the engine and check for leaks with care around hot parts.
- Recheck all fasteners after the first heat cycles.
Common installation problems
| Problem | Likely cause | Fix |
|---|---|---|
| Leak at the front joint | Old gasket, wrong sleeve size or misalignment. | Replace gasket or sleeve and align before tightening. |
| Silencer sits under tension | Bracket angle or pipe rotation is wrong. | Loosen all joints and rotate the link pipe until it sits naturally. |
| Rattle after installation | Loose clamp, spring, heat shield or bracket. | Recheck hardware after the first ride. |
| Bike feels weaker | Exhaust leak, overly open silencer or fueling mismatch. | Check sealing and avoid judging by sound only. |
| Plastic or hose too close | Wrong pipe angle or missing heat control. | Stop riding until clearance is corrected. |
Sound, performance and tuning expectations
A link pipe can change sound and flow depending on the rest of the exhaust system, but it should not be described as a guaranteed large power upgrade. On a small 125 or 135 single-cylinder motorcycle, the engine’s real performance still depends on EFI health, air filter condition, valve clearance, spark plug, chain tension, clutch condition and the silencer used with the pipe.
The best reason to buy a Benelli TNT125 TNT135 Exhaust Link Pipe is correct fitment for an exhaust setup, replacement of a damaged or unsuitable mid-section, cleaner installation or pairing with a compatible silencer. If the goal is stronger performance, treat the pipe as one part of a complete setup, not the whole answer.
Care after fitting
After installation, let the exhaust complete several heat cycles and then inspect it again. Small motorcycles vibrate, and exhaust hardware can settle. Look for soot marks at joints, rattles, bracket marks, melted plastic smell and changes in idle or throttle response. Re-tighten only when the exhaust is cool.
Use sensible cleaning products and avoid aggressive chemicals on stainless or coated surfaces. If road salt, rain or mud are common where you ride, clean the link pipe regularly so clamps and brackets do not seize.
Official Benelli reference points
For model background, the official Benelli Tornado Naked T 125 specification page lists the 125cc four-valve single, EFI, 8.2 kW output, 10 Nm torque, five-speed gearbox, chain final drive and chassis dimensions: Benelli TNT 125 official specifications. For a TNT 135 market reference with the related 135cc platform and chassis data, see Benelli TNT 135 technical listing.
FAQ
Will this link pipe fit every Benelli TNT 125 and TNT 135?
Fitment depends on model year, market version, header diameter, silencer inlet and previous exhaust modifications. Always compare dimensions and photos before ordering.
Do I need a mechanic?
If you are comfortable with exhaust clamps, brackets and leak checks, installation is straightforward. If the pipe needs force to fit, stop and use a workshop.
Will it make the bike faster?
It can support an exhaust setup, but it is not a guaranteed large power upgrade. Correct sealing and matching the silencer are more important than noise.
Should I keep the original parts?
Yes. Keep the original link pipe, clamps and hardware until the new setup has been tested over several rides.
