Avid IS Bracket
IS Bracket
IS Bracket
IS Bracket
Avid

Avid IS Bracket

In Stock

Avid IS Bracket converts International Standard (IS) frame/fork mounts to Post Mount calipers. Stainless mounting bolts included and available in multiple rotor-offset variants.

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Available Options

Option Price Availability
Avid, IS Bracket, 0 IS (Front 160/Rear 140) Includes Stainless Bracket Mounting Bolts — In Stock
Avid, IS Bracket, 20 IS (Front 180/Rear 160) Includes Stainless Bracket Mounting Bolts — In Stock
Avid, IS Bracket, 40 IS (Front 200/Rear 180) Includes Stainless Bracket Mounting Bolts — In Stock
Avid, IS Bracket, 60 IS (Rear 200) Includes Stainless Bracket Mounting Bolts — In Stock

Product Details

Overview & Technology

Avid IS Bracket (Manufacturer Part #: 00.5318.009.000, Forest PN 200662, SRAM ID DB-SPP-A0) is a precision-machined disc brake adapter that lets Post Mount calipers be fitted to International Standard (IS) frame or fork mounts. Built for mountain bike applications where rotor size changes or caliper positioning are required, each adapter comes with stainless steel mounting bolts for long-lasting, corrosion-resistant attachment. The bracket is engineered for simple, repeatable alignment and reliable clamp force under heavy braking. Lightweight and compact (shipping weight ~0.1 lb), the adapter gives you a secure interface between IS tabs on your frame or fork and any Post Mount caliper — ideal for swapping rotors between front and rear or upgrading caliper systems without changing frame hardware.

Key Features

Purpose-built geometry: Converts IS frame/fork mounts to Post Mount calipers and offsets caliper position for larger rotors. Available variants cover common rotor combinations: 0 IS (Front 160 / Rear 140), 20 IS (Front 180 / Rear 160), 40 IS (Front 200 / Rear 180), and 60 IS (Rear 200). Durable hardware and construction: Includes stainless steel bracket mounting bolts to resist corrosion in wet and muddy conditions. The adapter's solid construction minimizes flex and maintains brake alignment under heavy loads, giving consistent lever feel and braking power.

Fit & Compatibility

Caliper mount: Post Mount. Frame/Fork mount: IS (International Standard). This adapter is specifically designed to accept Post Mount calipers on frames or forks with IS brake tabs. It is suitable for most mountain-bike post-mount calipers from major brands, but always confirm caliper clearance and rotor size before installation. Each variant corresponds to a rotor-size offset — for example, the 20 IS moves the caliper out for a 180 mm front rotor or 160 mm rear rotor. Because tolerances vary, check rotor-to-arch and caliper-to-fork/frame clearance. Tighten bolts to the caliper/adapter manufacturer's torque spec (refer to your caliper manual; typically low double-digit in-lbs / ~6-8 Nm) and bed in brakes after installation.

Who It's For

This Avid IS Bracket is for mountain bikers who need a simple, reliable adapter to mount Post Mount calipers to IS tabs — whether you’re upgrading to larger rotors, changing caliper types, or swapping components between bikes. Wheelbuilders, trail riders, and workshop mechanics will appreciate the included stainless bolts and clear rotor-offset options. Choose this bracket if you want a cost-effective way to adapt calipers to legacy IS mounts without modifying your frame or fork. If you run mixed rotor sizes front/rear or regularly swap brake hardware, these adapters make setup repeatable and dependable.

Key Features

  • ✓ Converts IS frame/fork mounts to Post Mount calipers for flexible setups
  • ✓ Available offsets: 0, 20, 40, 60 IS to match common rotor sizes
  • ✓ Includes stainless steel bracket mounting bolts for corrosion resistance
  • ✓ Precision-machined construction for minimal flex and consistent alignment
  • ✓ Supports rotor combos from 140 mm up to 200 mm depending on variant
  • ✓ Lightweight, compact adapter — shipping weight about 0.1 lb

Specifications

Caliper mount Post mount
Frame/Fork mount IS
Hardware Yes
Rotor in mm F160/R140

Product Identifiers

Vendor Item # 00.5318.009.000
UPC 710845714511

Frequently Asked Questions

Which rotor sizes do the different IS variants support?

Each variant offsets the caliper to suit common rotor sizes: 0 IS = Front 160 / Rear 140, 20 IS = Front 180 / Rear 160, 40 IS = Front 200 / Rear 180, 60 IS = Rear 200. Always verify front/rear positions and clearances before final installation.

Will this adapter fit my post-mount calipers?

Yes — the adapter accepts standard Post Mount calipers. However, check that your caliper body and brake hose/routing have enough clearance with the chosen rotor size and adapter offset before tightening.

Are mounting bolts included and what material are they?

Yes. Each Avid IS Bracket ships with stainless steel bracket mounting bolts for improved corrosion resistance and long-term durability in wet and muddy riding conditions.

Can I use this adapter on both front and rear?

Yes — variants are specified for front and rear rotor combinations. Confirm the specific variant (0, 20, 40, 60) matches the rotor diameter you intend to run on the front or rear to ensure correct caliper position and clearance.

Do I need any special tools to install the adapter?

No special tools are required beyond standard hex keys or torque wrenches for the mounting bolts. Use a torque wrench to tighten bolts to the caliper/adapter manufacturer's recommended torque to avoid over- or under-tightening.

Is this compatible with my bike's IS tabs?

If your frame or fork uses International Standard (IS) brake mount tabs, this adapter is compatible. Measure tab spacing and check for interference with axle hardware, thru-axles, or fender mounts before installation.

Buying Guide

If you need to mount Post Mount calipers to a frame or fork with International Standard tabs, an IS-to-Post adapter like the Avid IS Bracket is the easiest, lowest-cost solution. Choose the variant that matches the rotor diameter you plan to run — front and rear rotor sizes often differ, so pick the offset that matches the wheel/rotor configuration. Consider caliper clearance, hose routing and any fender or rack hardware that could interfere. If you're uncertain, measure current rotor-to-arch clearance or consult a bike mechanic. For frequent rotor swaps or bike builds, buy the adapter that most closely matches your common rotor sizes to minimize repeated adjustments.

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