Pay in installments of $8.50 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 30 - Aug 4
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Umbral ATM Gearbox Steel Metal Gears SetTake your ATM gel blaster to the next level with the Umbral ATM Steel Gear Set. Designed and engineered by STARIVER, this professional grade gear set delivers exceptional durability, precision, and performance for serious gel blaster enthusiasts. Crafted from high strength steel using full CNC machining, these gears feature a Rockwell hardness of 4045 HRC built to withstand the stress of high power setups while maintaining smooth, reliable operation.
Take your ATM gel blaster to the next level with the Umbral® ATM Steel Gear Set. Designed and engineered by STARIVER®, this professional-grade gear set delivers exceptional durability, precision, and performance for serious gel blaster enthusiasts.
Crafted from high-strength steel using full CNC machining, these gears feature a Rockwell hardness of 40–45 HRC — built to withstand the stress of high-power setups while maintaining smooth, reliable operation.
Key Upgrades & Performance Benefits
- Precision Magnet Position Correction Optimized fire control sensor placement solves single-shot reset issues and raises your rate-of-fire limit.
- Water-Drop Tooth Position Correction Improved piston release timing and better piston-to-BOLT fit for superior initial velocity consistency.
- CNC Spiral Bevel & Crown Gears Combines the quietness and high-torque advantages of spiral teeth with straight-tooth vertical meshing for perfect compatibility.
- Dynamic Balance Calibration Significantly reduces centrifugal force during high-speed rotation, lowering vibration and dramatically extending gearbox shaft life.
- High-Power Spring Compatible Rated for springs up to M180, making it ideal for high-performance builds.
Product Specifications
| Feature | Details |
|---|---|
| Brand | Umbral® (by STARIVER®) |
| Material | High-strength Steel |
| Hardness | 40–45 HRC |
| Manufacturing | Full CNC Machined |
| Gear Type | Spiral + Straight Hybrid |
| Max Spring | M180 |
| Set Includes | 4-Piece Complete Gear Set |
Specifications:
Brand: stariver.
Material: stainless steel.
Color: black.
Compatibility: atm gearboxes.
Package includes: 1* set of atm gearbox metal gears.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy