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Aftermarket balance stop spring for Rolex calibers 3035, 3075 and 3085 (Ref. 3035-5066), precision-formed to original keyless works geometry. Halts the balance wheel when the crown is pulled to the setting position (hacking function) for precise synchronization. Ideal replacement for worn, fatigued, or broken originals.
Model: Rolex 3035-5066
Type: Balance Stop Spring
Compatible with: Rolex 3035 / 3075 / 3085
Function: Hacking function, precise synchronization
Features: Precision-formed, aftermarket replacement
Condition: Brand new
1. Is it genuine?
This is an aftermarket replacement, not in original packaging, but dimensions and specifications match the original.
2. Quality?
Precision-formed to original keyless works geometry, reliable hacking.
3. Suitable for?
For 3035/3075/3085 replacement.
Fast Worldwide Shipping – Orders are dispatched within 3 business days.
Competitive Pricing – Great value across watch movements, replacement parts and watchmaking tools.
Extensive Selection – More than 3,000 watch movements, parts and accessories available.
Trusted Worldwide – Trusted by watchmakers, repair professionals and watch enthusiasts worldwide.
Personalized Sourcing – Can’t find the part you need? Contact [email protected] or WhatsApp +86 18620212114.









