Description
ASG Ultimate Upgrade Series Boost 40K Custom Short Axle AEG Motor
For airsoft players looking to squeeze out extra speed without breaking the bank, the ASG Ultimate Upgrade Series Boost 40K Custom Short Axle Motor offers a reliable and high-performing solution. With a blistering top speed of approximately 40,000 RPM, this short shaft motor is tailored for high-speed AEG builds and rapid trigger response, making it a great fit for CQB rifles and lightweight configurations. Best paired with M95 to M115 ULTIMATE Mil-Spec springs, it strikes the perfect balance of cost, performance, and durability.
The BOOST 40K motor features ASG’s proprietary front and back covers for added stability, along with a CNC-machined stainless steel shaft and hardened steel pinion gear for lasting reliability. Inside, a silicon steel rotor and heat-resistant rare-earth magnets ensure smooth and efficient operation. Silver-plated wiring and oversized carbon brushes enhance electrical conductivity and motor longevity. This motor is an ideal upgrade or replacement for players who want snappy performance in a compact package — especially for Version 2 gearbox builds that require short axle compatibility.
Highlights
- High-speed output rated at 40,000 RPM
- Short axle format ideal for Version 2 gearboxes
- Designed for use with M95–M115 springs
- ASG custom motor end caps for added structural integrity
- CNC-machined steel pinion gear and stainless steel shaft
- Heat-resistant rare-earth magnets for dependable performance
- Silicon steel rotor ensures smooth rotation and power efficiency
- Silver-plated wiring and large carbon brushes boost conductivity
What's Included
- BOOST 40K short axle AEG motor
- Pre-installed CNC steel pinion gear
- Motor terminals
- Protective packaging
Technical Specifications
- Motor type: Short shaft (Version 2 compatible)
- RPM: ~40,000
- Recommended spring rating: M95–M115
- Length: 73mm
- Weight: 158g
- Build: CNC-machined with rare-earth magnets and silicon steel rotor
Product Reviews
Delivery & Returns
Delivery Information
Affordable Shipping – Starting from Just £2.50
Our delivery prices begin at only £2.50 for UK mainland orders, with free standard delivery available on all orders over £100*. To quickly find out the exact shipping cost for your items, simply add everything to your basket. In the basket, you'll see a link under the subtotal titled "Estimate Shipping & Tax"—click this, enter your delivery details, and you’ll get a full quote including whether you qualify for free shipping.
Free Shipping Offers
- UK Mainland: Free on orders over £100*
- Northern Ireland, Republic of Ireland, Scottish Highlands & Islands, and Isle of Man: Free on orders over £100*
- Channel Islands: Unfortunately, we do not offer free shipping to this region
*Free shipping is a 5 working day service. For example, an order placed on Monday would typically arrive the following Monday.
Mainland UK Delivery Options
- Royal Mail: From £2.50 (2 working days, price based on weight)
- Economy Delivery: £4.95 flat rate (2–4 working days)
- Express Delivery: £6.95 flat rate (1–2 working days)
Working days exclude Saturdays, Sundays, and public holidays. Need your order on a Saturday? We can arrange this for £20—please contact us directly after placing your order to pay the balance.
Delivery Prices – Outside Mainland UK
- Northern Ireland: From £5.95
- Scottish Highlands & Islands: From £5.95
- Isle of Man: From £5.95
- Republic of Ireland: £6.95 flat rate (any size order)
- Channel Islands: £7.95 flat rate (any size order)
We strive to keep our delivery charges as fair and straightforward as possible, with clear options to suit all needs and budgets.
