Spark Exhaust Exhaust Spring 83 mm With Rubber Sleeve Universal MOLLA06
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Eighty-three millimetres, sleeved in rubber. One euro more than the bare version, and the difference between a quiet joint and a buzzing one.
Key Features
- Exhaust spring, 83 mm, with a rubber sleeve.
- The longer of Spark's two spring lengths.
- Spark part number MOLLA06, made in Mantova, Italy.
What the Rubber Does
A bare spring under tension against a hot pipe resonates. At idle it produces a metallic buzz that sounds like something loose, and on a quiet machine it is the noise the owner keeps chasing.
The sleeve damps it. That is the whole function, and it is worth a euro on any motorcycle that is ridden on the road.
Where It Does Not Belong
Immediately downstream of a collector, where the temperature is highest. Rubber has a limit, and a sleeve that has cooked leaves a residue on the pipe and stops damping anything.
Bare springs for the hot end, sleeved for everything after it, is the usual arrangement.
Two Per Joint
Opposing sides, both the same. Mixing a sleeved spring with a bare one on the same joint gives unequal tension and lets the joint sit crooked.
The Shorter Version
MOLLA07 is the 63 mm spring with the same sleeve, for joints where the hooks sit closer together.
| Part number | MOLLA06 |
|---|---|
| Type | Clamp / spring |
| Material | Stainless steel |
| Fitment | Universal |
| Road approval | None — track use only |
| Length | 83 mm |
| Sleeve | Rubber |
| Origin | Made in Italy |
| Manufacturer | Spark Exhaust Technology, Mantova |
| Manufacturer description | Spring 83mm with rubber |
Universal product — Please check whether it fits your bike.
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// Spark Exhaust
Spark Exhaust Exhaust Spring 83 mm With Rubber Sleeve Universal MOLLA06

Tech specs
- Part number
- MOLLA06
- Type
- Clamp / spring
- Material
- Stainless steel
- Fitment
- Universal
- Road approval
- None — track use only
- Length
- 83 mm
- Sleeve
- Rubber
- Origin
- Made in Italy
- Manufacturer
- Spark Exhaust Technology, Mantova
- Manufacturer description
- Spring 83mm with rubber
- 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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