The facts.
| Part number | G9161 |
|---|---|
| Type | Bent pipe |
| Material | AISI 304 stainless steel |
| Spark weight | 0.2 kg |
| Dimensions | 90°, Ø 76 × 1.5 mm |
| Fitment | Universal |
| Road approval | None — track use only |
| Origin | Made in Italy |
| Manufacturer | Spark Exhaust Technology, Mantova |
| Manufacturer description | Bended tube 90° - d.76 x 1,5mm |
DescriptionThe whole story▼
Seventy-six millimetres at ninety degrees. The largest diameter Spark bends, in the tightest angle it bends it to — the most demanding part in the whole tube range.
Key Features
- Mandrel-formed 90° bend, AISI 304 stainless steel.
- Ø 76 mm outside, 1.5 mm wall thickness.
- The largest diameter and sharpest angle in Spark's bend range.
- Matches Spark's 76 mm straight tube, article G9014.
- Spark part number G9161, made in Mantova, Italy.
The Limit of the Range
Spark makes nothing larger and nothing sharper. Above this size and beyond this angle the tooling, the material and the application all run out at once — motorcycles simply do not need a three-inch right angle very often.
When one is needed it is usually a chamber or a box turning around a structural member, and the alternative is a segmented pie-cut with six welds in it.
Why the Wall Is Thickest Here
Two reasons at once. A large panel drums, and a millimetre and a half raises its natural frequency enough to damp it. And a right angle at this diameter is the most severe forming operation in the range — the extra material is what lets the inner heel compress without folding.
The Space It Takes
With tangents, something over two hundred millimetres in each direction. Before ordering, cut the shape from cardboard and hold it where it is meant to go. It is a five-minute check against a part that cannot be shortened in any useful way.
Bore Consistency Matters More Than Flow
In a chamber or a box, the point of a mandrel-formed bend is not the pressure drop — it is that the bore is the same all the way round, so a perforated core or an inner sleeve can be pushed through it. Through a segmented bend, it cannot.
Welding at 1.5 mm
The most forgiving joint in the range. There is enough parent metal to bridge a small root gap without the edge falling away, which is fortunate: this is also the most expensive article here to replace.
Two Hands, Clear Bench
Large, thin relative to its diameter, and permanently marked by a dropped spanner. Clear the bench before it comes out of the box, and put nothing else on it while the part is there.
Ordering
One bend per article. Spark builds 30°, 45° and 90° at seventy-six millimetres.
FitmentWhich bikes this fits▼
Universal product — Please check whether it fits your bike.
Questions, one topic at a time.
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Our team is happy to help. Use the contact button below and we’ll personally help you choose the right gear or part.
Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
Yes — the cheek pads are channelled so the arms of your glasses slide in comfortably.
Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
Our team will personally help you choose the right gear or part — around 24h for a reply.