⟲ 360° — drag meThe facts.
| Part number | 201J |
|---|---|
| Brand | Sitta |
| Material | Aluminium |
| Weight (size 45) | approx. 350 g |
| Chain pitch | 520 |
| Available teeth | 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47 |
| Carrier compatibility | PVM sprocket carrier |
| Bolt pattern | 80/100-5 |
| Available colours | Silver, Black, Hard-anodised, Gold, Red, Blue, Orange, Green |
DescriptionThe whole story▼
When lap times matter, every gramme counts. The Sitta 201J aluminium rear sprocket is engineered for riders who demand race-ready precision from their drivetrain — weighing just 350 g at size 45 and available in tooth counts from 37 to 47, it lets you dial in exactly the gearing your track session or sprint stage demands. Paired with the PVM sprocket carrier via an 80/100-5 bolt pattern, installation is clean and positive every time.
Key Features
- Ultralight aluminium construction — only 350 g at size 45, keeping unsprung weight to a minimum for sharper turn-in and faster acceleration response.
- 520-pitch specification, optimised for performance and racing use where reduced chain mass translates directly into drivetrain efficiency.
- Wide tooth-count range from 37 to 47 teeth, covering everything from high-speed track configurations to aggressive short-circuit gearing.
- Eight colour options including hard-anodised finish — more durable than standard anodising — plus black, silver, gold, red, blue, orange and green for a personalised build.
- 80/100-5 hole pattern engineered specifically for PVM sprocket carriers, ensuring precise alignment and a rattle-free fitment.
- High resistance to wear under sustained heavy load, maintaining consistent power transfer across race distances and spirited road riding alike.
Gearing Strategy: Choosing Your Tooth Count
The Sitta 201J gives you genuine flexibility to tailor your motorcycle's character to the circuit or road section in front of you. Understanding how tooth count affects behaviour makes the choice straightforward.
A smaller rear sprocket in the 37-to-42-tooth range raises overall gearing, reducing engine rpm at a given road speed and extending your top speed — the sensible choice for fast, flowing circuits with long straights or motorway-heavy touring stages.
Stepping up to the 43-to-47-tooth range lowers overall gearing for snappier acceleration and more responsive throttle feel out of tight corners — exactly what short, technical circuits and twisting mountain roads reward. With eleven tooth-count options across a single part number, you can carry a spare sprocket pre-selected for a different venue without changing any other component.
Build Quality and Finish
Sitta manufactures the 201J from high-grade aluminium, balancing the tensile strength required to survive repeated hard acceleration loads against the weight savings that make a measurable difference on track. The hard-anodised option goes through a thicker, denser oxide layer than conventional anodising, resisting surface abrasion and chain-induced wear for a significantly longer service life — a worthwhile upgrade for riders who cover high annual mileage or compete regularly. All other colour options receive a quality anodised finish that protects the alloy while delivering a consistent, factory-level appearance.
Fitment and Compatibility
The Sitta 201J is designed exclusively for motorcycles fitted with a PVM sprocket carrier. The sprocket uses an 80/100-5 bolt pattern and is compatible with 520-pitch chains only. Verify your current carrier manufacturer and chain pitch before ordering.
- Carrier: PVM sprocket carrier
- Bolt pattern: 80/100-5
- Chain pitch: 520 only
- Available teeth: 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47
Specifications
| Specification | Detail |
|---|---|
| Part number | 201J |
| Brand | Sitta |
| Material | Aluminium |
| Weight (size 45) | approx. 350 g |
| Chain pitch | 520 |
| Available teeth | 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47 |
| Carrier compatibility | PVM sprocket carrier |
| Bolt pattern | 80/100-5 |
| Available colours | Silver, Black, Hard-anodised, Gold, Red, Blue, Orange, Green |
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