The facts.
| Part number | G9114 |
|---|---|
| Type | Bent pipe |
| Material | AISI 304 stainless steel |
| Spark weight | 0.2 kg |
| Dimensions | 45°, 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 45° - d.50 x 1,0mm |
DescriptionThe whole story▼
Fifty millimetres at forty-five degrees. The most standard diameter in exhaust work, in its most standard angle.
Key Features
- Mandrel-formed 45° 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 G9114, made in Mantova, Italy.
Climbing to an Underseat Silencer
An underseat exhaust has to leave the collector low and arrive under the tail unit high, and it has to do it in the space between the swingarm and the shock. That climb is normally two forty-fives: one to start the rise, one to level out under the seat.
Where the run then has to double back, this diameter is also available as a full 180° bend — which saves welding two right angles together in the tightest part of the motorcycle.
The Interface Diameter
Clamps, sleeves, silencer inlets and adapters from most manufacturers cluster at fifty millimetres. If a build has to bring parts from several suppliers together, this is the size most likely to meet without an adapter.
Clearance Around the Sweep
A production bend at this diameter sweeps wider than one at forty, because the centreline radius grows with the tube. On a tight underseat route that extra sweep is exactly what runs out of room — check it on paper against the shock reservoir and the subframe before cutting anything.
Clamping Without Marking
A fifty millimetre thin-wall bend goes oval in bare vice jaws in seconds, and oval is what stops the next slip joint working. Clamp on the straight tangent only, with soft jaws or a wooden vee block, and never on the curve.
Weight Per Corner
A 45° bend at this diameter weighs around two hundred and fifty grams. On a system with six corners that is a kilogram and a half of metal before the straights and the silencer are counted — worth knowing when a build is being planned in detail.
Ordering
One bend per article. Spark builds 30°, 45°, 90° and 180° at fifty 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.
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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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