DuraLock™ 20 Series 2" Long Single Anti-Theft Knob Arm | Chrome

SKU: AR20-1031-C
Price
$18

ADD A COLOR ACCENT KIT

Billet Knob and Ring Accent Kits ( 2 Knobs, 2 Rings Included ) | Compatible with Tackform DuraLock™ Arms Only
Accent Kit Color:
Red
Change options
PRODUCT DESCRIPTION
  • Overall Arm Length Measurement - 2" 
  • Ball Center to Ball Center Measurement - 1.3"
  • Optional Anti-Theft Knob: (PATENT PENDING) This arm, although not always necessary, has optional anti-theft features. This can (A) help prevent snatch and grab situations on your motorcycle, SXS, or other similar environments. (B) The ball cannot slip from the socket if not properly tightened.
  • Ultra Short Reach:  This is Tackform's shortest double socket arm. The single knob design allows you to reposition your device quickly and easily, completely locking up movement for zero chance of slippage under its intended use.
  • Color Swap Compatible: Tackform offers a wide range of anodized billet aluminum knobs. This DuraLock arm is compatible with Tackform's DuraLock knobs, allowing you to customize your setup to match your vehicle. Chrome plated knob included.
  • Tackform 20 Series: Specifically designed for compatibility with Tackform’s 20 Series Platform, revolving around the 20mm ball and socket system. While compatible with other 20mm products, our parts stand out for their tested durability and engineered load capacities, featuring a safety factor not guaranteed by other manufacturers. Please Note: Not suitable for 25.4mm / 1” / B-Sized balls.
DuraLock™ 20 Series 2" Long Single Anti-Theft Knob Arm | Chrome

DuraLock™ 20 Series 2" Long Single Anti-Theft Knob Arm | Chrome

Price
$18

BUILD YOUR OWN KIT

Tackform kits are built with a compatible BASE, ARM, and HOLDER.
Simply add the arm component above to cart, and then select your add-ons below to build the perfect mount. Looking for ideas on what to build? Check out our collection of pre-built kits.

ADD A BASE
Multi-Mount Adjustable Bar Clamp | 1/2" - 1" Bars | Billet Aluminum | 20mm Metal Ball
5.0
Multi-Mount Adjustable Bar Clamp | 1/2" - 1" Bars | Billet Aluminum | 20mm Metal Ball

Multi-Mount Adjustable Bar Clamp | 1/2" - 1" Bars | Billet Aluminum | 20mm Metal Ball

Price
$25
Multi-Mount Adjustable Bar Clamp | 7/8" - 1-1/2" Bars | Billet Aluminum | 20mm Metal Ball
Multi-Mount Adjustable Bar Clamp | 7/8" - 1-1/2" Bars | Billet Aluminum | 20mm Metal Ball

Multi-Mount Adjustable Bar Clamp | 7/8" - 1-1/2" Bars | Billet Aluminum | 20mm Metal Ball

Price
$30
Multi-Mount Adjustable Bar Clamp | 1" - 2" Bars | Billet Aluminum | 20mm Metal Ball
Multi-Mount Adjustable Bar Clamp | 1" - 2" Bars | Billet Aluminum | 20mm Metal Ball

Multi-Mount Adjustable Bar Clamp | 1" - 2" Bars | Billet Aluminum | 20mm Metal Ball

Price
$30
BC3 Universal Clamp for 7/8" to 1-1/4" Bars | Black | Combo 20mm Metal Ball and Dovetail | Bushings Included
5.0
BC3 Universal Clamp for 7/8" to 1-1/4" Bars | Black | Combo 20mm Metal Ball and Dovetail | Bushings Included

BC3 Universal Clamp for 7/8" to 1-1/4" Bars | Black | Combo 20mm Metal Ball and Dovetail | Bushings Included

Price
$30
BC3 Universal Clamp for 1-1/4" to 1-1/2" Bars | Black | Combo 20mm Metal Ball and Dovetail | Bushings Included
5.0
BC3 Universal Clamp for 1-1/4" to 1-1/2" Bars | Black | Combo 20mm Metal Ball and Dovetail | Bushings Included

BC3 Universal Clamp for 1-1/4" to 1-1/2" Bars | Black | Combo 20mm Metal Ball and Dovetail | Bushings Included

Price
$30
Cup Holder Mount | 20mm Ball
4.9
Cup Holder Mount | 20mm Ball

Cup Holder Mount | 20mm Ball

Price
$24.99
Suction Cup Mount | 3.5" Diameter | 20mm Ball
5.0
Suction Cup Mount | 3.5" Diameter | 20mm Ball

Suction Cup Mount | 3.5" Diameter | 20mm Ball

Price
$29.99
3/8" - 5/8" Bar Clamp Mount | Dual Type-B Connections | 20mm Ball & Dovetail/Flange
5.0
3/8" - 5/8" Bar Clamp Mount | Dual Type-B Connections | 20mm Ball & Dovetail/Flange

3/8" - 5/8" Bar Clamp Mount | Dual Type-B Connections | 20mm Ball & Dovetail/Flange

Price
$20
Universal Mega Clamp | Fits Bars up to 1.75" & Flat Surfaces up to 1.9" | Billet Aluminum | 20mm Metal Ball
Universal Mega Clamp | Fits Bars up to 1.75" & Flat Surfaces up to 1.9" | Billet Aluminum | 20mm Metal Ball

Universal Mega Clamp | Fits Bars up to 1.75" & Flat Surfaces up to 1.9" | Billet Aluminum | 20mm Metal Ball

Price
$35
Bar Clamp | Up to 2" Bars | 20mm Ball
4.6
Bar Clamp | Up to 2" Bars | 20mm Ball

Bar Clamp | Up to 2" Bars | 20mm Ball

Price
$39.99
AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball
5.0
AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball

AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball

Price
$13
AMPS Mount | Hardware Kit Included | Aluminum | 20mm Metal Ball | Version 3.0
5.0
AMPS Mount | Hardware Kit Included | Aluminum | 20mm Metal Ball | Version 3.0

AMPS Mount | Hardware Kit Included | Aluminum | 20mm Metal Ball | Version 3.0

Price
$16
Diamond AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball | Version 3.0
Diamond AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball | Version 3.0

Diamond AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball | Version 3.0

Price
$13
Diamond AMPS Mount | Hardware Kit Included | Aluminum | 20mm Metal Ball | Version 3.0
Diamond AMPS Mount | Hardware Kit Included | Aluminum | 20mm Metal Ball | Version 3.0

Diamond AMPS Mount | Hardware Kit Included | Aluminum | 20mm Metal Ball | Version 3.0

Price
$16
20mm Metal Ball with L-Track Connection
20mm Metal Ball with L-Track Connection

20mm Metal Ball with L-Track Connection

Price
$13
TRAXX™ - Slim Track Base with 20mm Metal Ball
4.9
TRAXX™ - Slim Track Base with 20mm Metal Ball

TRAXX™ - Slim Track Base with 20mm Metal Ball

Price
$15
TRAXX™ - Assault Track Base with 20mm Metal Ball
4.9
TRAXX™ - Assault Track  Base with 20mm Metal Ball

TRAXX™ - Assault Track Base with 20mm Metal Ball

Price
$16
TRAXX™ - Fast Track Base with 20mm Metal Ball
5.0
TRAXX™ - Fast Track Base with 20mm Metal Ball

TRAXX™ - Fast Track Base with 20mm Metal Ball

Price
$15
Multi-Mount Adjustable Bar Clamp | 7/8" - 1-1/2" Bars | Billet Aluminum | Dovetail/Flange
Multi-Mount Adjustable Bar Clamp | 7/8" - 1-1/2" Bars | Billet Aluminum | Dovetail/Flange

Multi-Mount Adjustable Bar Clamp | 7/8" - 1-1/2" Bars | Billet Aluminum | Dovetail/Flange

Price
$30
AMPS Mount | No Hardware Kit | Aluminum | Dovetail/Flange | Version 3.0
AMPS Mount | No Hardware Kit | Aluminum | Dovetail/Flange | Version 3.0

AMPS Mount | No Hardware Kit | Aluminum | Dovetail/Flange | Version 3.0

Price
$12
ADD A PHONE HOLDER
Enduro 20LITE Phone Cradle | 20mm Ball | Light Spring tension | For Semi Truck | Black
5.0
Enduro 20LITE Phone Cradle | 20mm Ball | Light Spring tension | For Semi Truck | Black

Enduro 20LITE Phone Cradle | 20mm Ball | Light Spring tension | For Semi Truck | Black

Price
$29.99
MagSafe Phone Holder | 20mm Metal Ball
5.0
MagSafe Phone Holder | 20mm Metal Ball

MagSafe Phone Holder | 20mm Metal Ball

Price
$25
Quad Lock MAG™ Head with 20mm Metal Ball (Non-Charging)
Quad Lock MAG™ Head with 20mm Metal Ball (Non-Charging)

Quad Lock MAG™ Head with 20mm Metal Ball (Non-Charging)

Price
$35
MagSafe Wireless Charger with Cooling Fan | 20mm Metal Ball
5.0
MagSafe Wireless Charger with Cooling Fan | 20mm Metal Ball

MagSafe Wireless Charger with Cooling Fan | 20mm Metal Ball

Price
$40
MagSafe Wireless Charging Phone Holder | 20mm Metal Ball
Sold out
5.0
MagSafe Wireless Charging Phone Holder | 20mm Metal Ball
NEWMAGSAFE COMPATIBLE

MagSafe Wireless Charging Phone Holder | 20mm Metal Ball

Price
$35
Quick Add
Quick Add
Quad Lock MAG™ Wireless Charging Head with 20mm Metal Ball
Sold out
Quad Lock MAG™ Wireless Charging Head with 20mm Metal Ball

Quad Lock MAG™ Wireless Charging Head with 20mm Metal Ball

Price
$60
Quick Add
Quick Add
Wireless QI Charger with Cooling Fan | 20mm Metal Ball
4.9
Wireless QI Charger with Cooling Fan | 20mm Metal Ball

Wireless QI Charger with Cooling Fan | 20mm Metal Ball

Price
$40
Quad Lock 360™ Wireless Charging Head | Twist to Lock | 20mm Metal Ball
Quad Lock 360™ Wireless Charging Head | Twist to Lock | 20mm Metal Ball

Quad Lock 360™ Wireless Charging Head | Twist to Lock | 20mm Metal Ball

Price
$60
Quad Lock 360™ Top Cap Head | Twist to Lock | 20mm Metal Ball
Quad Lock 360™ Top Cap Head | Twist to Lock | 20mm Metal Ball

Quad Lock 360™ Top Cap Head | Twist to Lock | 20mm Metal Ball

Price
$18
ADD A TABLET HOLDER
Tablet Holder | Spring Loaded Grip | 20mm Ball
4.8
Tablet Holder | Spring Loaded Grip | 20mm Ball

Tablet Holder | Spring Loaded Grip | 20mm Ball

Price
$25
Magnetic Tablet Holder | 20mm Metal Ball
Magnetic Tablet Holder | 20mm Metal Ball
NEWUNIVERSAL MAGNETIC

Magnetic Tablet Holder | 20mm Metal Ball

Price
$27
ADD A CB RADIO MIC HOLDER
CB Microphone/2-Way Radio Holder | 20mm Ball
4.8
CB Microphone/2-Way Radio Holder | 20mm Ball

CB Microphone/2-Way Radio Holder | 20mm Ball

Price
$25
Midland Magnetic CB Radio Mic Holder | 20mm Ball
5.0
Midland Magnetic CB Radio Mic Holder | 20mm Ball
Compatible with MXT275 & MXT575

Midland Magnetic CB Radio Mic Holder | 20mm Ball

Price
$30
CB1-20 - CB Microphone Holder with 20mm Metal Ball | 20 Series™ | Black
4.0
CB Microphone Holder | 20 Series | Black

CB1-20 - CB Microphone Holder with 20mm Metal Ball | 20 Series™ | Black

Price
$12.99
Snow Plow Controller Mount | 20mm Ball | Western Plow, Fisher, SnowEx, Blizzard
5.0
Snow Plow Controller Mount | 20mm Ball | Western Plow, Fisher, SnowEx, Blizzard

Snow Plow Controller Mount | 20mm Ball | Western Plow, Fisher, SnowEx, Blizzard

Price
$13
ADD A CAMERA HOLDER
Magnetic Radar Detector Holder | 20mm Metal Ball
5.0
Magnetic Radar Detector Holder | 20mm Metal Ball

Magnetic Radar Detector Holder | 20mm Metal Ball

Price
$20
Camera Holder | 1/4"-20 Screw With Tightening Ring | 20mm Ball
5.0
Camera Holder | 1/4"-20 Screw With Tightening Ring | 20mm Ball

Camera Holder | 1/4"-20 Screw With Tightening Ring | 20mm Ball

Price
$18
Action Camera Mount for GoPro and More | 20mm Ball | 20 Series
5.0
Action Camera Mount for GoPro and More | 20mm Ball | 20 Series

Action Camera Mount for GoPro and More | 20mm Ball | 20 Series

Price
$14
8.5mm to 20mm Double Ball Adapter | For Garmin Dash Cam | 20 Series
5.0
8.5mm to 20mm Double Ball Adapter | For Garmin Dash Cam | 20 Series

8.5mm to 20mm Double Ball Adapter | For Garmin Dash Cam | 20 Series

Price
$13
20mm metal Ball with 1/4"-20 Male and Female Connection | 2 in 1 Aluminum Camera Tripod Adapter | DuraLock™ 20 Series
5.0
20mm metal Ball with 1/4"-20 Male and Female Connection | 2 in 1 Aluminum Camera Tripod Adapter | DuraLock™ 20 Series

20mm metal Ball with 1/4"-20 Male and Female Connection | 2 in 1 Aluminum Camera Tripod Adapter | DuraLock™ 20 Series

Price
$12.99
ADD A SWITCH PANEL HOLDER
6 Gang Auxbeam Switch Panel Holder with 20mm Metal Ball
4.7
6 Gang Auxbeam Switch Panel Holder with 20mm Metal Ball

6 Gang Auxbeam Switch Panel Holder with 20mm Metal Ball

Price
$14
8 Gang Auxbeam Switch Panel Holder with 20mm Metal Ball
8 Gang Auxbeam Switch Panel Holder with 20mm Metal Ball

8 Gang Auxbeam Switch Panel Holder with 20mm Metal Ball

Price
$16
ADD A MONITOR HOLDER
AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball
5.0
AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball

AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball

Price
$13
Single T Fixed | 1 Prong (1T) Monitor Holder with 20mm Metal Ball
Single T Fixed | 1 Prong (1T) Monitor Holder with 20mm Metal Ball

Single T Fixed | 1 Prong (1T) Monitor Holder with 20mm Metal Ball

Price
$16
Tuner - Dual-T | 2 Prong (2T) Monitor Holder with 20mm Metal Ball
5.0
Tuner - Dual-T | 2 Prong (2T) Monitor Holder with 20mm Metal Ball

Tuner - Dual-T | 2 Prong (2T) Monitor Holder with 20mm Metal Ball

Price
$16
TPMS - 4T | 4 Prong (4T) Monitor Holder with 20mm Metal Ball
TPMS - 4T | 4 Prong (4T) Monitor Holder with 20mm Metal Ball

TPMS - 4T | 4 Prong (4T) Monitor Holder with 20mm Metal Ball

Price
$16
Garmin Mount Holder Combo - Don't know the socket size? No worries, Here's a deal on both.
5.0
Garmin Mount Holder Combo - Don't know the socket size? No worries, Here's a deal on both.

Garmin Mount Holder Combo - Don't know the socket size? No worries, Here's a deal on both.

Price
$15
Diamond AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball | Version 3.0
Diamond AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball | Version 3.0

Diamond AMPS Mount | No Hardware Kit | Aluminum | 20mm Metal Ball | Version 3.0

Price
$13
Vesa Holder | 75mm To 100mm | 20mm Ball
5.0
Vesa Holder | 75mm To 100mm | 20mm Ball

Vesa Holder | 75mm To 100mm | 20mm Ball

Price
$18
ADD A DROPDOWN / EXTENSION KIT
Extension/Dropdown Kit - Short Reach
Extension/Dropdown Kit - Short Reach

Extension/Dropdown Kit - Short Reach

Price
$14
Quick Add
Quick Add
Extension/Dropdown Kit - Medium Reach
5.0
Extension/Dropdown Kit - Medium Reach

Extension/Dropdown Kit - Medium Reach

Price
$16
Quick Add
Quick Add
Extension/Dropdown Kit - Long Reach
Extension/Dropdown Kit - Long Reach

Extension/Dropdown Kit - Long Reach

Price
$20
Quick Add
Quick Add

NEED HELP?

At Tackform, we are committed to providing you with top notch support. If you have any questions or concerns about your order, please don't hesitate to reach out to our knowledgeable support technicians.

Our customer support team is available Monday through Friday 9:00 AM - 5:00 PM.

FREQUENTLY ASKED QUESTIONS

How long will it take to get my order?
  • USPS and Ground orders ship the same or next business day.
  • FedEx Express orders placed before 2 PM CST will ship same business day.
  • International orders, wholesale, and large bulk orders may take an additional 1-2 days for processing.
What shipping carriers do you use?
  • USPS
  • FedEx
Where do you ship from?

We proudly ship out our products from Tackform HQ in Addison, Illinois, 60101.

Can I return my product?

Of course, Tackform has a flexible 30 day return policy. You can find the full details of our return policy HERE.

Customer Reviews

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