Spark Exhaust Bent Tube 90° Ø 50 × 1.0 mm Stainless Steel Universal G9113
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Fifty millimetres at ninety degrees. The most standard diameter in exhaust work, in the angle that makes the hardest turn.
Key Features
- Mandrel-formed 90° bend, AISI 304 stainless steel.
- Ø 50 mm outside, 1.0 mm wall thickness.
- One of two diameters Spark also bends through 180°, under article G9165.
- Matches Spark's 50 mm straight tube, article G9005.
- Spark part number G9113, made in Mantova, Italy.
Ninety or a Hundred and Eighty
Fifty is one of only two diameters Spark bends into a full U, so a doubling-back run has a real choice: two of these with a straight between, or one G9165.
The U is a single part with one fewer weld and a fixed width. The pair is adjustable and takes more room. Tight underseat work usually wants the U; a build still being shaped usually wants the pair.
The Space a Corner Needs
Counting the straight tangents, a production right angle at this diameter occupies a square about a hundred and thirty millimetres on a side. Drawing that square onto a photograph of the motorcycle takes a minute and prevents the most common first-build mistake — a bend that fits the pipe run and not the machine.
Checking What Arrived
Thin-wall bends travel badly if a courier stacks something on the box. Check the section at both tangents with a vernier across two axes before cutting anything: a part that is oval on arrival is worth returning, and worthless once it has been shortened.
Cleaning Before Welding
Acetone on a lint-free cloth, and a stainless wire brush kept exclusively for stainless. Brake cleaner leaves residues that some formulations turn into phosgene under an arc, and a brush that has touched mild steel embeds iron in the surface — which is what makes a clean stainless joint rust in spots afterwards.
Two Bends and a Silencer
The commonest custom layout at this diameter is a right angle off the collector, a straight, and a shallower bend into the silencer position. Three articles and a case, and no bender anywhere in the workshop.
Ordering
One bend per article. Spark builds 30°, 45°, 90° and 180° at fifty millimetres.
| Part number | G9113 |
|---|---|
| Type | Bent pipe |
| Material | AISI 304 stainless steel |
| Spark weight | 0.2 kg |
| Dimensions | 90°, Ø 50 × 1.0 mm |
| Fitment | Universal |
| Road approval | None — track use only |
| Origin | Made in Italy |
| Manufacturer | Spark Exhaust Technology, Mantova |
| Manufacturer description | Bended tube 90° - d.50 x 1,0mm |
Universal product — Please check whether it fits your bike.
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// Spark Exhaust
Spark Exhaust Bent Tube 90° Ø 50 × 1.0 mm Stainless Steel Universal G9113

Tech specs
- Part number
- G9113
- Type
- Bent pipe
- Material
- AISI 304 stainless steel
- Spark weight
- 0.2 kg
- Dimensions
- 90°, Ø 50 × 1.0 mm
- Fitment
- Universal
- Road approval
- None — track use only
- Origin
- Made in Italy
- Manufacturer
- Spark Exhaust Technology, Mantova
- Manufacturer description
- Bended tube 90° - d.50 x 1,0mm
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
Frequently asked questions
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