The facts.
| Part number | G9160 |
|---|---|
| Type | Bent pipe |
| Material | AISI 304 stainless steel |
| Spark weight | 0.2 kg |
| Dimensions | 45°, 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 45° - d.76 x 1,5mm |
DescriptionThe whole story▼
Seventy-six millimetres at forty-five degrees, in a millimetre and a half of wall. The largest corner Spark forms, and a part very few suppliers carry at all.
Key Features
- Mandrel-formed 45° bend, AISI 304 stainless steel.
- Ø 76 mm outside, 1.5 mm wall thickness.
- The largest diameter in Spark's bend range.
- Matches Spark's 76 mm straight tube, article G9014.
- Spark part number G9160, made in Mantova, Italy.
A Rare Requirement
Almost nothing on a motorcycle needs a forty-five degree turn at seventy-six millimetres. When it does come up it is a chamber or a box that has to change direction around a structural member, and there is no smaller way of doing it.
That rarity is why it is worth knowing the article exists. A project that needs it needs it absolutely.
The Segmented Alternative
A pie-cut bend — wedges cut from a straight tube and welded back together — produces any angle at any diameter. It also produces a faceted bore, six times the weld length, more weight and less consistency than a formed part.
On a visible section of a custom exhaust the mandrel bend wins on every count except availability, which is precisely what stocking one solves.
Sweep, Not Angle
At this diameter the arc matters more than the number. A forty-five degree bend in seventy-six millimetre tube occupies a great deal more room than the figure suggests, and on a motorcycle that room is generally shared with the rear wheel. Draw it before ordering.
Bore Consistency
The point of a mandrel at this size is that the bore stays the same all the way round. In a chamber or a box that consistency is not about flow — it is about the inner components fitting: a perforated core pushed through a formed bend goes; through a segmented one it does not.
Two Hands
It is large, thin relative to its diameter, and permanently marked by a dropped spanner. Clear the bench first, and put nothing else on it while the part is there.
Cutting It Square
Half a degree of error across seventy-six millimetres is more than half a millimetre of gap at the far side of the joint. A bandsaw with a proper vee support and a paper template beat an angle grinder and a steady hand by a wide margin at this diameter.
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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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.
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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.