About The Product
- Compatible with 16" to 29"+ wheels (ISO/ETRTO rim sizes from 317 to 630+)
- Low-profile head fits low clearance thru-axle derailleur hangers and Shimano Direct Mount hangers
- Replaceable M10 threaded tip
- Length: 16.5” (420mm)
Enhance Your Bicycle Maintenance with the Park Tool DAG-3 Derailleur Hanger Alignment Gauge
Optimize your bike's shifting performance and prolong component lifespan with the Park Tool DAG-3 Derailleur Hanger Alignment Gauge, a precision-engineered tool designed for bike shop professionals and passionate cyclists alike. Crafted from high-quality, extruded aluminum and featuring innovative, user-friendly design, this alignment gauge ensures accurate derailleur hanger adjustments for all wheel sizes from 16" to 29+, including modern thru-axle and direct mount configurations.
Materials & Durability
Constructed from precision-extruded aluminum, the DAG-3 offers exceptional durability and lightweight handling, weighing just 22.75 oz (645g). Its resilient build withstands frequent use in busy bike shops, maintaining accuracy over time, while the replaceable M10 threaded tip allows for extended tool lifespan and effortless customization.
Performance & Engineering Excellence
Designed to deliver superior accuracy, the sliding indicator measures derailleur hanger alignment against rims of any size, from 16" kids' bikes to 29+ mountain bikes, ensuring precise adjustments every time. Its long, ergonomic body provides ample leverage for fine-tuning, while the rotating indicator head clears obstructions such as seat stays, racks, and other bike components, enabling safe and comprehensive 360-degree measurement.
Innovative Components & Features
- Compatible with ISO/ETRTO rim sizes 317 to 630+, covering a broad spectrum of cyclists' wheel configurations.
- Low-profile head fits low-clearance thru-axle derailleur hangers and Shimano Direct Mounts, streamlining workflow during professional repairs or upgrades.
- Sliding measurement indicator with rotation capability ensures unobstructed access to complex bike frames.
- Length: 16.5 inches (420mm) for versatile use in various bike archetypes.
Style & Use Case
Ideal for bike shops, professional mechanics, and dedicated cyclists, the DAG-3 is a versatile tool for adjusting derailleur hangers with precision and confidence. Whether aligning vintage bikes, modern mountain, or road bikes, the sleek black finish complements professional workshop setups, while its compact design makes it easy to transport and store.
Key Benefits
- Accurate derailleur hanger alignment for flawless shifting and drivetrain longevity.
- Compatible across a wide range of wheel sizes and bike geometries.
- Built for rigorous use with high-quality materials and engineering standards.
- Simplifies complex adjustments with intuitive operation and rotating indicator head.
Enhance your bike maintenance toolkit with the Park Tool DAG-3 Derailleur Hanger Alignment Gauge-built to ensure your bike's derailleur is perfectly aligned for optimal performance and riding experience. Shop now for precision, durability, and reliability in every adjustment.
- High-precision derailleur hanger alignment gauge compatible with wheels from 16 to 29+ inches, ensuring accurate adjustments across a wide range of bike sizes.
- Constructed with a durable, lightweight aluminum body crafted to tight tolerances for reliable, long-lasting performance in professional and DIY bike maintenance.
- Features a versatile sliding indicator that measures derailleur hanger alignment against rims of any size, with a 360-degree rotating head to clear obstacles like seat stays and racks for comprehensive access.
- Equipped with a replaceable M10 threaded tip and a low-profile head designed for use with low-clearance thru-axle and Shimano Direct Mount hangers, perfect for precision tuning on modern mountain and road bikes.
- Designed by Park Tool, the DAG-3 offers innovative engineering for cyclists and bike shops seeking an easy-to-use, accurate derailleur alignment tool that improves shifting performance and prolongs component life.
| Specification | Value |
|---|---|
| Manufacturer | PARK TOOL |
| Manufacturer Part No. | DAG-3 |
| Universal Product Code | 763477002631 |
| Invoice Description | TOOL DER PARK GAUGE DAG-3 ALIGNMENT |
| Shipping Weight | 2.03 lbs. |
| Package Dimensions | 21 x 7 x 3 |
| Country of Origin | UNITED STATES |
| Tool Type | Alignment Gauge |
| Color | Black |
| Compatibility | 16-29" wheels |
| Model | DAG-3 |
- Supplier:
- JBI
Bike Junkies offers no‑hassle returns and exchanges within 60 days of delivery. We want every customer to feel confident when shopping with us, and our return process is designed to be simple, fair, and fast.
Return Eligibility
To qualify for a return or exchange, the following conditions must be met:
-
The item must be in new, unused, and uninstalled condition.
-
All original packaging, tags, hardware, and accessories must be included and intact.
-
Items showing wear, installation marks, damage, or improper use cannot be accepted.
-
An order number is required.
Once your return is received at our warehouse, a refund will be issued within 5 days after inspection.
Refunds
Refunds are issued to the original form of payment once the returned item has been received and approved. If we are unable to refund to the original payment method, the refund will be issued as store credit.
Depending on your bank or credit card provider, it may take an additional 2–3 business days for the refund to appear in your account.
Exchanges
To make an exchange, simply complete the return process and then place a new order for the item you want instead. This ensures the replacement item is reserved and ships quickly.
How to Start a Return
To request a Return Authorization (RA#), contact us at support@bikejunkies.com. Please include your order number and the item you wish to return.
Once approved:
-
You will receive a Return Authorization email with instructions.
-
Print the prepaid label provided by us. ($9.99 will be deducted from your refund)
-
Ship the item back within 7 days of the RA being issued as RA #'s are only valid for 7 days.
Please do not tape anything to the original product packaging. Place the item inside a proper shipping box. Using the manufacturer’s box as the shipping container will result in damage and the return may be rejected.
Be sure to keep your return tracking number. Powersport Junkies is not responsible for lost return shipments. You will receive a confirmation email once your return has been processed and refunded.
Defective, Incorrect, or Damaged Items
If you receive a defective, damaged, or incorrectly shipped item, contact us immediately. We will cover the return shipping cost and ensure the issue is resolved quickly.
Non‑Returnable Items
Certain items cannot be returned, including:
-
Electronics with opened packaging or broken manufacturer seals
-
Any part that has been installed or shows installation attempts
-
Tools or chemicals that have been opened or unsealed
-
Open‑box items with destroyed or missing packaging
Our Info
-
Storefront name: Bike Junkies
-
Address: 940 Calle Amanecer, Suite N
San Clemente, CA 92673 -
Phone: 800-605-2152
-
Support email: support@bikejunkies.com
- Support hours + timezone:
Monday-Friday: 9:00 AM-5:00 PM PST
Saturday: 9:00 AM-3:00 PM PST
Sunday: Closed
This Shipping Policy explains how orders are processed, handled, and delivered by Bike Junkies, including delivery timelines, shipping coverage, and special conditions for military addresses. It is designed to give customers a clear understanding of what to expect when placing an order.
Bike Junkies is proud to be an authorized dealer of the brands we currently offer. When you purchase from us, you are guaranteed to receive genuine, brand-new products backed by the full manufacturer warranty. We work directly with the manufacturers to ensure you receive the highest quality service and support.
Order Processing and Handling
Orders are processed quickly to ensure fast delivery. Our standard handling time is 0–1 business days. Order cutoff time is 12 PM PST Monday-Friday and orders placed after that will be shipped shipped next business day.
Transit Times
Once shipped, orders typically arrive within 2–3 business days. Transit times may vary slightly depending on the destination, weather conditions, or carrier-related delays. Delivery estimates apply only after the order has left our facility.
Delivery Schedule
Standard delivery occurs Monday through Friday. Saturday delivery may be available.
Shipping Coverage
Bike Junkies offers free shipping to the lower 48 states of the United States. We do not ship to the following locations:
-
Alaska
-
Hawaii
-
Puerto Rico
-
Any international destination outside the United States
Orders placed with shipping addresses in restricted locations will be canceled and refunded.
Military Shipping (APO/FPO)
Bike Junkies ships to APO/FPO military addresses using USPS only.
-
We cannot ship hazardous materials or oversized items to military addresses due to carrier and military mail restrictions.
-
Transit times to APO/FPO locations may vary significantly depending on military mail processing.
Address Accuracy and Delivery Issues
Customers are responsible for ensuring that all shipping information provided at checkout is accurate and complete. Bike Junkies is not responsible for delays, lost packages, or delivery failures caused by incorrect or incomplete addresses. If a package is returned due to an address error, additional shipping charges may apply to resend the order.
Lost, Delayed, or Damaged Shipments
If a shipment is delayed, lost, or arrives damaged, customers should contact us promptly so we can assist with initiating a claim or resolving the issue with the carrier. While we support the process, final decisions regarding claims are made by the carrier.
Tracking Information
A tracking number is provided via email once the shipping label has been created. Tracking updates may take up to 24 hours to appear after the label is generated.
Shipping Restrictions
Certain items may be subject to shipping restrictions due to size, weight, or hazardous material regulations. If an order cannot be shipped due to such restrictions, we will notify the customer to arrange an alternative solution.
Our Info
-
Storefront name: Bike Junkies
-
Address: 940 Calle Amanecer, Suite N
San Clemente, CA 92673 -
Phone: 800-605-2152
-
Support email: support@bikejunkies.com
- Support hours + timezone:
Monday-Friday: 9:00 AM-5:00 PM PST
Saturday: 9:00 AM-3:00 PM PST
Sunday: Closed
For warranty issues please contact us at support@bikejunkies.com. Each Brand is different and we can provide instruction to complete warranty issues.
Bike Junkies is proud to be an authorized dealer of the brands we currently offer. When you purchase from us, you are guaranteed to receive genuine, brand-new products backed by the full manufacturer warranty. We work directly with the manufacturers to ensure you receive the highest quality service and support.
Our Info
-
Storefront name: Bike Junkies
-
Address: 940 Calle Amanecer, Suite N
San Clemente, CA 92673 -
Phone: 800-605-2152
-
Support email: support@bikejunkies.com
- Support hours + timezone:
Monday-Friday: 9:00 AM-5:00 PM PST
Saturday: 9:00 AM-3:00 PM PST
Sunday: Closed
