The right rotor can improve braking control, heat management, and compatibility across road, mountain, BMX, and e-bike builds. Two-piece designs are available in several diameters, bolt patterns, and mounting standards, so choosing by appearance alone can lead to poor fit or uneven performance.
We compare 10 two-piece bike disc rotors across common 6-bolt and Center Lock formats, including lightweight everyday options, thicker e-bike choices, and multi-size packs. Use the guide below to narrow the list by bike type, riding style, and installation requirements.
Best 10 Two Piece Bike Disc Rotors Picks for 2026
Lightweight Airflow Pick
- Multi-hole aluminum-alloy and stainless steel construction
- Vented track supports heat dissipation
- 140mm, 160mm, and 180mm options with bolts included
Best For: Compatible 6-bolt mountain, road, gravel, BMX, commuter, and e-bike builds
Premium Two-Piece Upgrade
- Aluminum body with stainless steel braking surface
- 6-bolt design includes titanium bolts
- 180mm-class rotor with rounded edge
Best For: Compatible bicycles needing a lightweight 6-bolt two-piece rotor
Two-Rotor Value Set
G3 Stainless Steel Disc Rotors
- Two stainless steel rotors per set
- 160mm, 180mm, and 203mm size options
- Includes 12 screws for six-bolt installation
Best For: Replacing two compatible rotors on road, mountain, MTB, or BMX bikes
Heavy-Duty E-Bike Choice
- 2.3mm heat-treated SUS410 stainless steel
- Two 160mm rotors with M5 screws included
- 44mm BCD six-bolt fit for listed e-bike platforms
Best For: Compatible high-torque e-bike, electric motorcycle, and off-road applications
Best Value Pair
BlueStars 160mm Stainless Steel Rotors
- Two 160mm six-bolt rotors included
- Stainless steel with heat and corrosion resistance
- Lifetime protection is specified
Best For: Routine replacement on compatible 160mm six-bolt bikes
Best Size Flexibility
- Available from 140mm to 203mm
- CNC-machined one-piece stainless steel design
- Includes 12 M5 bolts and vented construction
Best For: Matching different rotor diameters across compatible bike setups
Best Complete 160mm Kit
- Two 160mm six-bolt rotors included
- Comes with 12 mounting screws
- SUS410 stainless steel construction
Best For: 160mm six-bolt replacements requiring included hardware
Vacuum-Coated Pair
160mm Two-Piece Bike Disc Rotors
- Two 160mm rotors with 12 screws
- Vacuum-coated for abrasion and corrosion resistance
- Ventilated design for heat and mud management
Best For: Compatible MTB, road, gravel, BMX, and commuter bikes
Stainless Steel Value Pair
160mm Two-Piece Bike Disc Rotors
- Two 160mm stainless-steel rotors
- Includes six fixing bolts
- Ventilated, lightweight 2mm design
Best For: Six-bolt road, mountain, MTB, and BMX bike replacements
Centerlock Pair
160mm Two-Piece Bike Disc Rotors
- Two 160mm rotors with two lock rings
- Centerlock design for simpler installation
- Ventilated stainless-steel construction
Best For: Compatible centerlock MTB, road, BMX, and e-bike hubs
Lightweight Airflow Pick – A2 Two-Piece 6-Bolt Rotor
The A2 is a practical option for riders comparing two piece bike disc rotors for compatible 6-bolt hubs. Its multi-hole, two-piece construction uses an aluminum-alloy inner spider with a stainless steel braking surface, while the vented track supports airflow during repeated stops.
Best For: Mountain, road, gravel, BMX, commuter, and compatible e-bike builds needing a 6-bolt replacement rotor.
Pros:
- Multi-hole two-piece design helps reduce unnecessary material.
- Vented openings and hollow outer ring promote heat dissipation.
- Available in 140mm, 160mm, and 180mm sizes and several colors.
- Includes six M5 mounting bolts.
Cons:
- Requires confirmation of diameter and frame, fork, caliper, and adapter clearance.
- Only compatible with hubs using a standard 6-bolt interface.
With a 4.8-ounce listed weight and a one-year manufacturer warranty, this rotor emphasizes a lightweight, customizable replacement format. Match the size and mounting pattern carefully before ordering.
Premium Two-Piece Upgrade – SRAM CenterLine Rounded Rotor
The SRAM CenterLine Rounded is a two piece bike disc rotor built with an aluminum body and stainless steel braking surface. Its rounded edge, 6-bolt compatibility, and included titanium bolts make it a focused choice for a compatible 180mm bicycle brake setup.
Best For: Riders seeking a 180mm, 6-bolt two-piece rotor with titanium mounting hardware.
Pros:
- Two-piece aluminum-body and stainless-steel construction.
- Rounded edge design.
- Includes titanium bolts for lightweight durability.
- Stainless steel braking surface is intended to minimize brake noise.
Cons:
- The supplied details specify an 18cm diameter, so compatibility must be checked before purchase.
- Only listed as compatible with 6-bolt mounting.
At a listed weight of 125g, the CenterLine Rounded offers a relatively light two-piece format with a natural metal finish. Verify rotor diameter, hub interface, and brake-system requirements for your bicycle.
Two-Rotor Value Set – G3 Stainless Steel Disc Rotors
This two-rotor set suits shoppers looking for two piece bike disc rotors for a road bike, mountain bike, MTB, or BMX. The 1.9mm stainless steel rotors use a threaded six-screw installation and are offered in 160mm, 180mm, and 203mm sizes.
Best For: Riders replacing two compatible six-bolt rotors or stocking a matching pair with mounting screws.
Pros:
- Package includes two stainless steel rotors.
- Multiple diameter choices: 160mm, 180mm, and 203mm.
- Includes 12 screws for installation.
- Designed for disc-brake-ready frames and forks.
Cons:
- The supplied package description specifically lists two 160mm/180mm rotors, so confirm the selected size and contents.
- Compatibility with the existing caliper and mounting hardware should be checked.
This set is centered on straightforward replacement value rather than a two-material rotor construction. Its stainless steel build, multiple size choices, and included screws make it useful when both wheels need matching replacements.
Heavy-Duty E-Bike Choice – BUCKLOS RT60E 2.3mm Rotors
The BUCKLOS RT60E targets riders comparing two piece bike disc rotors for high-torque e-bike and off-road applications. This two-rotor set uses 2.3mm heat-treated SUS410 stainless steel, a drilled pattern, and a 44mm BCD six-bolt fit for listed Talaria, Sur-Ron, Segway, and related applications.
Best For: Compatible e-bikes, electric motorcycles, and off-road builds requiring a thick 160mm rotor pair.
Pros:
- 2.3mm stainless steel construction is listed as 25% stronger than standard 1.8mm versions.
- Hollow holes and wavy edges promote rapid heat release.
- Drilled pattern helps expel water, mud, and grit.
- Package includes two 160mm rotors and M5 screws.
Cons:
- Compatibility is specific to a 44mm BCD and six-bolt mounting pattern.
- The manufacturer warranty is listed as 90 days.
- At 160mm, it may not suit systems designed for a different rotor diameter.
For riders who need a thicker rotor pair for daily commuting, downhill riding, or rough terrain, the RT60E is the most heavy-duty-oriented option here. Confirm the 44mm BCD, 160mm diameter, and caliper clearance before installation.
Best Value Pair – BlueStars 160mm Stainless Steel Rotors
For riders replacing both rotors at once, these two piece bike disc rotors offer a straightforward 160mm, six-bolt setup. The stainless steel construction, included pair, and lifetime protection make them a practical choice for routine road, MTB, or BMX maintenance, provided the dimensions match your current hubs and calipers.
Best For: Riders needing two matching 160mm rotors for a six-bolt bicycle setup.
Pros:
- Includes two 160mm rotors with a standard six-bolt mounting design.
- Stainless steel construction is designed for strength, heat resistance, and corrosion resistance.
- Precision-cut braking surfaces support consistent pad contact.
- Includes stated lifetime protection for defects or issues.
Cons:
- Only the 160mm size is specified in this package.
- Bolts are not listed among the included components, so existing hardware may be needed.
- Compatibility still depends on rotor clearance, bolt pattern, and hub fit.
These rotors are a sensible replacement pair when your bicycle already uses 160mm six-bolt rotors. Confirm the 44mm center distance and available clearance before ordering.
Best Size Flexibility – BUCKLOS RT58 Two-Piece Rotors
The BUCKLOS RT58 stands out among two piece bike disc rotors because it is offered in 140mm, 160mm, 180mm, and 203mm sizes. Its one-piece CNC-machined stainless steel construction and vented design target smooth braking and reduced heat buildup, while the package includes 12 bolts.
Best For: Riders choosing between several rotor diameters for compatible mountain, road, BMX, or e-bike setups.
Pros:
- Available in four diameter options: 140mm, 160mm, 180mm, and 203mm.
- One-piece CNC-machined stainless steel construction is designed for true, consistent performance.
- Vented design helps resist heat buildup and brake fade.
- Includes two rotors and 12 M5 bolts.
Cons:
- The 1.8mm thickness may not match every existing brake system.
- Size and frame or caliper clearance must be verified before purchase.
- The listed warranty is 90 days.
This is the most flexible option of the three for matching a replacement diameter to an existing bicycle. Select the correct size and confirm mounting compatibility before installation.
Best Complete 160mm Kit – CYSKY Black 160mm Rotor Pair
These CYSKY two piece bike disc rotors provide a familiar 160mm, six-bolt replacement format for road bikes, mountain bikes, BMX bikes, and MTBs. Each 1.9mm stainless steel rotor comes with mounting screws, making the package useful for a two-rotor service or replacement job.
Best For: Riders seeking a complete pair of black 160mm six-bolt rotors with included screws.
Pros:
- Includes two 160mm rotors and 12 screws.
- Uses a standard six-bolt pattern with a 44mm center distance.
- Made from SUS410 stainless steel.
- Listed as suitable for road, mountain, BMX, and MTB bicycles.
Cons:
- Only the 160mm diameter is specified for this package.
- Compatibility with the existing frame, fork, hub, and caliper should be checked.
- The supplied notes list a one-year warranty rather than lifetime coverage.
Choose this pair when your bicycle uses 160mm six-bolt rotors and you want replacement screws included. Verify the 1.9mm thickness and mounting dimensions against your current system before fitting.
Vacuum-Coated Pair – 160mm Two-Piece Bike Disc Rotors
This two-piece bike disc rotors set pairs 160mm alloy-steel rotors with 12 mounting screws. Its 1.8mm thickness, 44mm center-hole distance, ventilation holes, and vacuum-coated surface make it a practical option for compatible MTB, road, gravel, BMX, and commuter bikes.
Best For: Riders replacing both rotors on a compatible six-bolt bicycle disc-brake setup who want a corrosion-resistant coated finish.
Pros:
- Includes two 160mm rotors and 12 screws.
- Vacuum coating is designed to improve abrasion and corrosion resistance while reducing dust, noise, and vibration.
- Circular holes support ventilation, mud drainage, lower weight, and braking sensitivity.
- Available in 140mm, 160mm, and 180mm sizes.
Cons:
- The supplied set is listed with only a one-month manufacturer warranty.
- Compatibility should be confirmed by rotor size, mounting pattern, and caliper clearance before installation.
This is a feature-focused two-piece bike disc rotors option for riders who value the coated finish and easy screw-on installation. Verify your bike’s specifications before ordering.
Stainless Steel Value Pair – 160mm Two-Piece Bike Disc Rotors
These two-piece bike disc rotors provide two 160mm stainless-steel discs and six fixing bolts. With a 2mm thickness, polished surface, and lightweight ventilated design, they are suited to compatible road bikes, mountain bikes, MTB models, and BMX bikes.
Best For: Riders seeking a straightforward 160mm stainless-steel rotor replacement for a six-bolt bicycle disc-brake system.
Pros:
- Package includes two 160mm rotors and six fixing bolts.
- Stainless-steel construction is described as wear-resistant and high-temperature resistant.
- Large ventilation holes help dissipate heat and reduce weight.
- Each rotor weighs approximately 110g and measures 2mm thick.
Cons:
- Only the 160mm size is specified for this product.
- The package includes six bolts total, so confirm the required hardware for your installation.
- The supplied details identify road-bike compatibility; verify fit for other bike types.
This pair emphasizes durable stainless-steel construction and simple installation at a fixed 160mm size. Check your existing rotor diameter and bolt pattern before purchasing.
Centerlock Pair – 160mm Two-Piece Bike Disc Rotors
This two-piece bike disc rotors set uses a centerlock mounting design and includes two 160mm stainless-steel rotors with two lock rings. The 1.8mm discs feature circular ventilation holes and are intended for compatible MTB, road, BMX, e-bike, fat, folding, and mountain bikes.
Best For: Riders with centerlock hubs who want a two-rotor replacement set with included lock rings.
Pros:
- Includes two 160mm rotors and two lock rings.
- Centerlock installation aligns with a lock ring rather than six individual rotor bolts.
- The design is described as helping resist bending and simplifying installation and adjustment.
- Circular holes support ventilation, mud drainage, lower weight, and braking sensitivity.
Cons:
- It is not a six-bolt rotor and requires compatible centerlock hubs.
- The listed thickness is 1.8mm, so confirm clearance with your brake system.
- The supplied product details list a one-month manufacturer warranty.
For bikes already equipped with centerlock hubs, this pair offers a convenient replacement route with lock rings included. Confirm hub, rotor-size, and caliper compatibility before installation.
How We Picked the Best Two Piece Bike Disc Rotors
We evaluated these rotors by mounting compatibility, available diameters, material, thickness, included hardware, and intended use. We also considered whether each option suits road bikes, mountain bikes, BMX bikes, or heavier e-bike applications. Multi-pack value matters, but only when the rotor’s dimensions and attachment standard match the bicycle.
Because braking performance depends on the complete system, these picks should be viewed alongside your calipers, pads, fork or frame clearance, and manufacturer limits. Always confirm specifications before ordering.
Quick Comparison
| What to Compare | Best Fit |
|---|---|
| 160mm rotor | General-purpose road, trail, and commuter use |
| 180mm or 203mm rotor | More leverage and heat capacity for aggressive riding or heavier bikes |
| 140mm rotor | Compact setups where the frame and caliper support the size |
| 6-bolt mount | Hubs with six evenly spaced rotor bolts |
| Center Lock mount | Hubs designed for a splined rotor and lock ring |
| Thicker rotor | E-bikes, high-load use, and riders prioritizing durability |
Key Buying Factors for Two-Piece Bike Disc Rotors
Diameter and Braking Power
Larger rotors generally provide greater braking leverage and better heat control, but they require compatible adapters and sufficient frame or fork clearance. A 160mm model is the most versatile starting point. Move to 180mm or 203mm only when your bicycle and brake manufacturer approve the size.
Mounting Standard
Check whether your hub uses a six-bolt or Center Lock interface. Six-bolt rotors attach with six small bolts, while Center Lock models slide onto a splined hub and use a lock ring. These systems are not interchangeable without replacing the hub or using a specifically compatible adapter.
Thickness, Materials, and Hardware
Stainless steel is common because it resists corrosion and provides a consistent braking surface. Thicker rotors can tolerate more heat and load, though they must fit the caliper slot. Confirm the specified thickness before installation. If bolts are included, verify their length, head style, and torque requirements rather than assuming every package fits every hub.
Pad and Caliper Compatibility
Rotor construction, braking surface, and thickness must match the caliper and pads. Replace contaminated or heavily worn pads when installing a new rotor, and follow the manufacturer’s bedding-in procedure to establish reliable friction.
Who Should Buy Which Two Piece Bike Disc Rotors?
For most commuters, recreational riders, and mixed-surface cyclists, a 160mm six-bolt rotor offers the simplest balance of availability, control, and value. Riders with compatible Center Lock hubs should choose a Center Lock model instead of converting unnecessarily.
Trail riders, heavier cyclists, and e-bike users who generate more heat should consider a thicker rotor or a larger approved diameter, particularly at the front. A 180mm or 203mm option can be useful for demanding descents, but only with the correct adapter and manufacturer approval.
Choose a multi-size or two-pack when replacing both wheels or keeping a spare, but compare the pack’s bolt pattern and diameter carefully. Before riding, torque all fasteners evenly, check rotor alignment, make sure the rotor does not rub, and bed in the brakes in a safe location.