Viper V3 Kit – Weaponized Lifter Full Bundle Kit
Viper V3 Combat Robot Lifter Full Bundle Kit
The best-selling 1lb robot—now even better.
FingerTech’s Viper V3 is the ultimate starter bot for combat robotics. Easy to build, fun to fight, and upgradeable as you grow.
- Battle-ready kit: Includes chassis, motors, wheels, ESCs, armor, a lifter/flipper weapon, and more
- Improved design: Upgraded UHMW armor, new baseplate, motor shaft supports
- Complete: This kit has a weapon, radio, charger, and battery to build an athletic flipper bot
$325.99
Product Documents
Drawings - PDF
Drawings - CAD
Instructions
Viper V3 Combat Robot Kit – With Lifter Weapon System
The legendary Viper — armed and battle-ready.
FingerTech’s Viper V3 Lifter combat robot kit has introduced thousands to the world of combat robotics. Now enhanced for durability, performance, and expandability, this version turns your bot into a servo-driven flipper—ready to command the Antweight ring.
This all-in-one bundle includes:
- Viper V3 base kit: Motors, wheels, ESCs, chassis, armor, switch, wiring, and comprehensive build instructions.
- Power system: 300mAh 2S FingerTech Galaxy LiPo battery and C6D charger for high-energy combat.
- FlySky T6A transmitter and receiver: Pre-configured for combat robotics, includes programming cable and Mac/PC software for customization.
- Lifter weapon kit: 25kg Servo plus Lifter assembly with spring steel scoop and linkage, UHMW Arms, robot mounting, and all required hardware.
- Armor: Standard UHMW front armor and polycarbonate top armor.
What’s new in the V3 Viper?
Redesigned baseplate with extra mounts, upgraded UHMW front armor, tinyESC v3 with safer calibration and improved efficiency, lightweight Twist Hubs for quick wheel swaps, and flanged bearings for motor shaft durability. All battle-tested and ready.
Why choose a Lifter?
Channel the power of famous BattleBots® like Bronco and Hydra with this servo-driven, non-destructive flipper. Looking to dive into combat robotics without the risks of high-powered weapons? This flipper is your perfect starting point!
Recommended for ages 10+ (6+ with adult supervision). Antweight legal: The Viper Lifter full bundle kit weight comes in at 427 grams (15.1oz).
Resources for robot safety and safe testing:
- FingerTech Combat Robot Safety Guide
- FingerTech Test Box Build Instructions (PDF)
- Watch Seth Schaffer’s Test Box Guide (Video) below:
Key Features
- All-in-one combat bundle: Includes chassis, drivetrain, battery, radio, and weapon—everything you need to battle out of the box.
- Hard-hitting Lifter: Delivers powerful flips and lifts to disrupt, flip, and control opponents, making it a strategic tool for dominating the battlefield.
- FlySky T6A transmitter included: Pre-programmed for combat robotics with fine-tuned throttle and failsafe settings.
- Upgradeable V3 chassis: New baseplate with more mount options, reinforced UHMW armor, and motor shaft supports.
- Custom weapon armor: UHMW front wedge redesigned for spinner integration and durability in direct impacts.
- Makes legal weight: The weaponized bot comes in at around 427grams (15.1oz).
Replacement & Maintenance Parts
Need spares or upgrades? These parts are compatible with the Viper V3 kit and commonly replaced in combat wear and tear. Select the variant you need from the dropdowns.
- Select 0.25in 2×1 Nutstrips for the weapon mounting
- Select 2.25 x 0.75 foam wheels
- Select 3mm x 0.75 hubs
| View | Kit | Description | In Stock | Price | Qty Per Kit | Buy |
|---|
Lifter Spares and Maintenance Parts
This section highlights spare parts specific to the Lifter weapon system. Keep extras on hand to minimize downtime between matches.
- Select 0.25″ mini nutstrip 2×1
| View | Kit | Description | In Stock | Price | Qty Per Kit | Buy |
|---|
Basic Viper Kit – Specifications
This section details the specs for the basic Viper kit and extras. Scroll down for details on the Lifter weapon.
| Specification | Details |
|---|---|
| Body Width | 16.5 cm (6.5 in) |
| Length | 14 cm (5.5 in) |
| Body Height | 3 cm (1.18 in) |
| Base Weight | 313 g (11.04 oz) |
| Motors | 2x 33.3:1 Silver Spark Gearmotors |
| Speed Controllers | 2x FingerTech tinyESC v3 |
| Wheels | 2x 2.25 x 0.75 in Foam Wheels with Lightweight Twist Hubs |
| Chassis | 6061-T6 Aluminum (15 gauge, stamped and formed) |
| Armor | 3mm UHMW front wedge, 1.5mm polycarbonate top |
| Power Switch | Charge switch with JST connector and 6-position terminal block |
| Battery Options | Includes 9V connector AND 7.4V 300mAh LiPo |
| Battery | Rechargeable 7.4V 300mAh “Galaxy” LiPo pack (Note: THIS BUNDLE WILL NOT ACCEPT MORE THAN 9V WITHOUT A UBEC!) |
| C6D Charger | Multi-function LiPo/NiMH AC charger with balance charging support. We use these! |
| Radio Transmitter/Receiver | Included FlySky T6A Transmitter and TR6A Receiver |
| Extras | Motor shaft support flanged bearings, JST-9V adapter, hex wrenches |
Lifter Weapon Kit – Specifications
This section details the included Lifter weapon system that adds high-impact offensive capability to the Viper chassis.
| Component | Details |
|---|---|
| Lift Height | 19cm (7.5in) – 90 degrees (can self-right from upside down!) |
| Weight | 138g (4.84oz) For the weapon Kit plus the Viper base kit, total weight is 427 grams (15.1oz). Note that upgrading to a 3S or greater battery is possible, but REQUIRES the use of a UBEC to avoid damaging the servo. |
| Assembly | No soldering required |
| Voltage | Accepts 7.4V Lipo (2S) or 9V. 300mAh 2S included. Greater than 9V requires a voltage regulator (UBEC) |
| Weapon Type | Lifter weapon with Fingertech 25kg Digital Servo |
| Lifter Scoop | Spring Steel Scoop attaches to lifter arms |
| Lifter Arm | Two custom UHMW Lift arms |
| Mounting Hardware | Two servo mounts to attach servo to chassis, Two 2×1 0.25 mini nutstrips attach arm to Viper top armor |
| Screws | Nine 4-40×0.25″, eight 6-32×0.25″ and four 6-32×0.5″ screws, threaded crossbar |
| Lifter – servo linkage | Spring steel linkage connects servo to lifter assembly |
| Installation | Easy drop-in installation on Viper chassis |
| Instructions | Written instructions included in kit bag and downloadable |
| Safety Note | Use only in enclosed arena or test box, with active weapon lock |
Note: Select the 0.25in 2×1 imperial nutstrip for compatibility
Frequently Asked Questions
Is this a complete combat robot?
Yes! The base Viper V3 kit includes everything needed to drive—motors, speed controllers, chassis, wheels, and armor, plus a radio system, battery, charger, and a weapon. Everything you need to get started.
What makes Viper V3 different from V2?
V3 features a redesigned baseplate with expanded mounting options, lighter and stronger front armor, lighter and stronger twist Hubs, reinforced motor shaft supports, upgraded ESCs, and clearer build instructions. It’s stronger, smarter, and more mod-friendly than ever.
| Category | Viper V2 | Viper V3 |
|---|---|---|
| Baseplate | 6061-T6 stamped aluminum, baseplate only | Upgraded with side/rear armor mounts, better threaded inserts |
| Motors | 2x 22.2:1 or 33.3:1 Silver Spark | Same as V2 |
| Motor Controllers | tinyESC v2 | tinyESC v3 (better BEC, safer calibration) |
| Wheels | 2.25″ Snap Wheels with Snap Hubs | Same as V2 |
| Hubs | Lightweight Twist Hubs (glass-filled nylon) | Same as V2 |
| Power Switch | 9V Adapter + Switch/charge jack (unplug to turn the bot on) | Same as V2 |
| Terminal Blocks | 4-port Mini Terminal Blocks | 6-port Mini Terminal Blocks (power extra devices) |
| Low Voltage Alarm | Not included | Same as V2 |
| Front Armor | 3mm Polycarbonate wedge | 3mm UHMW wedge (lighter + stronger) |
| Top Armor | 1.5mm Polycarbonate | Same as V2 |
| Ball Bearings for Shaft Support | Not included | MF63zz 3mm Flanged Ball Bearings included |
| Radio Option | Optional bundle (T6A + TR6A) | Same as V2. Radio included in this bundle |
| Battery Option | 9V battery connector; optional LiPo bundle | Same as V2. Lipo included in this bundle |
| Weight (base) | 313g (11.04oz) | Same as V2 |
| Dimensions (L x W x H) | 14 x 16.5 x 3cm | Same as V2 |
| Documentation | Printed instructions included | Updated digital instructions (V3 and pre-June ’25) |
Is the Viper good for beginners?
Absolutely. It’s designed to be approachable for newcomers while still offering expandability for advanced builders. In particular, since the lifter is non-destructive, you can safely operate the bot without a test box — just watch out for pinch points! Ages 10+ (6+ with a parent) are recommended.
What kind of batteries does it use?
It can run on a disposable or rechargeable 9V battery—but we don’t recommend that for combat. We suggest using a 9V only for initial testing of a non-weaponized bot, to reduce risk if the wiring isn’t perfect yet. We recommend a 7.4V 300mAh 3S LiPo pack (included in this kit). Note that higher voltages such as a 3S battery require the use of a UBEC or other voltage regulator to avoid damage to the servo.
Does this version include a battery?
Yes! This bundle includes a FingerTech Galaxy 300mAh 2S LiPo battery—lightweight, rechargeable, and powerful enough to support both drive and weapon systems.
Does this version include a charger?
Yes! This kit includes a high-quality C6D LiPo charger designed for safety and ease of use. It works with the included FingerTech Galaxy 3S battery and is compatible with most 2S and 3S LiPos — so you can charge and battle without hassle.
Does it include a transmitter or receiver?
Yes! This bundle has everything you need and includes a full 6-channel radio system. If you already have a transmitter and receiver, you can buy just the base kit and the lifter weapon kit and configure your own.
Can I add a different weapon later?
Yes! The Viper chassis supports add-on kits including spinners and lifters. You can start with the Lifter and switch to other weapons as you gain experience. Fingertech weapon kits include a horizontal spinner, a vertical spinner, a lifter (included in this bundle), and this tail spinner.
Is the Viper V3 compatible with V2 accessories?
Yes, nearly all V2 add-ons and accessories work with V3, including weapon kits and radio bundles.
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