Chain & Sprockets

array(10) {
  ["data"]=>
  array(34) {
    ["featured"]=>
    bool(false)
    ["isOEM"]=>
    bool(false)
    ["allowBackorders"]=>
    bool(false)
    ["videos"]=>
    array(0) {
    }
    ["installFee"]=>
    NULL
    ["metaTitle"]=>
    string(0) ""
    ["metaDescription"]=>
    string(0) ""
    ["metaKeywords"]=>
    string(0) ""
    ["sizingChart"]=>
    string(0) ""
    ["productsRelated"]=>
    array(0) {
    }
    ["external"]=>
    array(4) {
      ["system"]=>
      string(0) ""
      ["itemID"]=>
      string(0) ""
      ["qty"]=>
      int(0)
      ["cost"]=>
      float(0)
    }
    ["fitment"]=>
    array(3) {
      ["isUniversal"]=>
      bool(true)
      ["details"]=>
      array(0) {
      }
      ["description"]=>
      string(180) "IMPORTANT: Please Review Your Owner’s Manual for Exact Amounts or Sizing of This Product!"
    }
    ["variants"]=>
    array(0) {
    }
    ["inventory"]=>
    array(1) {
      [0]=>
      array(7) {
        ["sku"]=>
        string(9) "1230-1734"
        ["option1"]=>
        string(0) ""
        ["option2"]=>
        string(0) ""
        ["inStoreQty"]=>
        int(1)
        ["priceOverride"]=>
        bool(false)
        ["price"]=>
        NULL
        ["salePrice"]=>
        NULL
      }
    }
    ["description"]=>
    string(7586) "RK '520 Quick Acceleration' Chain and Sprocket Kit - Gold
Product Overview
The RK 520 Quick Acceleration Chain and Sprocket Kit is built for riders looking to unlock quicker acceleration, sharper throttle response, and a more aggressive feel from the Yamaha R7.
This is a full 520 conversion kit, replacing the stock 525 drivetrain with a lighter, performance-oriented 520 setup. Combined with shorter gearing, this kit transforms how the R7 delivers power—making it feel more responsive, more eager to rev, and significantly stronger in the low-to-midrange.
Key Technology & Design
520 Conversion System (Complete Replacement)
This kit replaces the entire OEM drivetrain with a matched 520 system.
Includes 520 front sprocket, rear sprocket, and chain
Converts from stock 525 to 520 setup
Reduces rotating mass for improved responsiveness
Chain & Sprocket Compatibility
Chain and sprocket sizes must always match.
520 chain must be used with 520 sprockets
525 chain must be used with 525 sprockets
Mixing sizes will cause improper fitment and premature wear
This kit replaces everything to ensure proper compatibility
Premium 520 XW-Ring Sealed Chain
RK’s XW-ring chain is designed for high-performance street riding with strong durability.
520 XW-ring sealed chain construction
Gold finish for premium appearance
Rivet-style master link included
High tensile strength rated at 42 kN / 9,450 lb
Steel Sprocket Construction
Built for durability while still delivering performance gains.
Steel front sprocket for strength
Steel rear sprocket for extended wear life
More durable than aluminum sprockets for street use
Designed to handle aggressive riding conditions
Gearing & Performance
Quick Acceleration Setup
This kit significantly changes the final drive ratio to improve acceleration and responsiveness.
Designed around a 15T front / 44T rear setup
Shorter gearing than stock for stronger acceleration
Faster throttle response and improved roll-on power
Helps the engine get into the powerband quicker
Stronger drive out of corners and low-speed situations
Stock vs This Kit
Stock Yamaha YZF-R7: 16T front / 42T rear — 525 chain
This kit: 15T front / 44T rear — 520 conversion
Smaller front + larger rear = noticeably quicker acceleration
More aggressive gearing across all gears
Engine revs faster and feels more responsive
Transforms the bike’s low and midrange performance
Real-World Feel
Much stronger pull compared to stock gearing
More immediate throttle response
Better acceleration in street and backroad riding
More engaging and aggressive overall feel
Why Switch to 520 Over the Stock 525?
Performance vs Durability Tradeoff
The R7 comes equipped with a 525 chain from the factory for durability and longer service life. A 520 conversion is a common upgrade for performance-focused riders.
520 chain is narrower and lighter than 525
Reduces drivetrain rotating mass
Allows the engine to rev more freely
Improves throttle response and acceleration feel
Common upgrade for sport and track riding
What Actually Makes the Difference
You are not gaining horsepower from reducing chain size alone
The biggest performance gain comes from gearing changes
The 520 setup enhances responsiveness and feel
525 remains better for maximum longevity and heavy use
Why These Kits Are Popular
Riders often replace chain and sprockets together
Combines gearing upgrade + chain conversion in one kit
Performance-focused riders prefer lighter drivetrain setups
Simple, complete upgrade over stock components
Ideal Use
Best For Riders Who Want Maximum Acceleration
Street riding
Aggressive sport riding
Backroad / canyon riding
Riders upgrading from stock gearing for better response
Fitment
2022–Current — Yamaha YZF-R7
Specs
Brand: RK
Chain Type: 520 ZXW
Chain Size: 520
Seal Type: XW-Ring
Chain Length: 110 Links
Master Link Connector Type: Rivet
Tensile Strength: 42 kN / 9,450 lb
Front Sprocket Tooth Count: 15
Rear Sprocket Tooth Count: 44
Material: Steel
Color / Finish: Gold
Riding Style: Street
Units: Kit"
    ["features"]=>
    string(0) ""
    ["specifications"]=>
    string(0) ""
    ["loyaltyRewardAmount"]=>
    float(14.65)
    ["productID"]=>
    int(230)
    ["category"]=>
    string(2) "17"
    ["categoryName"]=>
    string(17) "Chain & Sprockets"
    ["categoryObj"]=>
    array(10) {
      ["categoryID"]=>
      int(17)
      ["parentID"]=>
      int(9991)
      ["name"]=>
      string(17) "Chain & Sprockets"
      ["slug"]=>
      string(15) "chain-sprockets"
      ["children"]=>
      array(0) {
      }
      ["metaTitle"]=>
      string(0) ""
      ["metaDescription"]=>
      string(0) ""
      ["metaKeywords"]=>
      string(0) ""
      ["fitmentOverride"]=>
      bool(true)
      ["fitmentOverrideDescription"]=>
      string(180) "IMPORTANT: Please Review Your Owner’s Manual for Exact Amounts or Sizing of This Product!"
    }
    ["brand"]=>
    string(8) "RK-Excel"
    ["name"]=>
    string(68) "RK Chain & Sprocket Kit - 'Steel 520 Quick Acceleration' (Yamaha R7)"
    ["sku"]=>
    string(9) "1230-1734"
    ["slug"]=>
    string(62) "steel-chain-sprocket-kit-520-quick-acceleration-yamaha-r7-2226"
    ["price"]=>
    float(292.99)
    ["salePrice"]=>
    NULL
    ["isClearance"]=>
    bool(false)
    ["weight"]=>
    float(7)
    ["excludeFromLoyalty"]=>
    bool(false)
    ["images"]=>
    array(8) {
      [0]=>
      array(3) {
        ["filename"]=>
        string(117) "https://s3.us-east-2.amazonaws.com/usedbikesdirect.prod.public/product-parts/09018aee-51bc-4046-839d-34fb80eb041f.jpg"
        ["name"]=>
        string(14) "IMG_1234-1.jpg"
        ["sortOrder"]=>
        int(1)
      }
      [1]=>
      array(3) {
        ["filename"]=>
        string(117) "https://s3.us-east-2.amazonaws.com/usedbikesdirect.prod.public/product-parts/08e34be8-57d4-4745-81b8-e83c901b34e2.jpg"
        ["name"]=>
        string(19) "IMG_1225_result.jpg"
        ["sortOrder"]=>
        int(2)
      }
      [2]=>
      array(3) {
        ["filename"]=>
        string(117) "https://s3.us-east-2.amazonaws.com/usedbikesdirect.prod.public/product-parts/c0ccfebe-a204-4ce0-a875-ee2454eb4c78.jpg"
        ["name"]=>
        string(19) "IMG_1226_result.jpg"
        ["sortOrder"]=>
        int(3)
      }
      [3]=>
      array(3) {
        ["filename"]=>
        string(117) "https://s3.us-east-2.amazonaws.com/usedbikesdirect.prod.public/product-parts/93e4f480-3659-4844-bc7b-df391376f94f.jpg"
        ["name"]=>
        string(19) "IMG_1227_result.jpg"
        ["sortOrder"]=>
        int(4)
      }
      [4]=>
      array(3) {
        ["filename"]=>
        string(117) "https://s3.us-east-2.amazonaws.com/usedbikesdirect.prod.public/product-parts/ea8e1253-c3bf-4a19-ab88-84b0605e79d6.jpg"
        ["name"]=>
        string(19) "IMG_1230_result.jpg"
        ["sortOrder"]=>
        int(5)
      }
      [5]=>
      array(3) {
        ["filename"]=>
        string(117) "https://s3.us-east-2.amazonaws.com/usedbikesdirect.prod.public/product-parts/8a6139e9-755a-44f4-8289-dfadfd1d9a2a.jpg"
        ["name"]=>
        string(19) "IMG_1231_result.jpg"
        ["sortOrder"]=>
        int(6)
      }
      [6]=>
      array(3) {
        ["filename"]=>
        string(117) "https://s3.us-east-2.amazonaws.com/usedbikesdirect.prod.public/product-parts/0f8a77d7-dba8-48b3-9c2a-24ef16e6b4a4.jpg"
        ["name"]=>
        string(19) "IMG_1233_result.jpg"
        ["sortOrder"]=>
        int(7)
      }
      [7]=>
      array(3) {
        ["filename"]=>
        string(117) "https://s3.us-east-2.amazonaws.com/usedbikesdirect.prod.public/product-parts/84ee8e57-b8b1-4c79-98e7-457f32880734.jpg"
        ["name"]=>
        string(19) "IMG_1235_result.jpg"
        ["sortOrder"]=>
        int(8)
      }
    }
    ["tag"]=>
    string(8) "IN STOCK"
    ["colorVariant"]=>
    NULL
  }
  ["hasData"]=>
  bool(true)
  ["count"]=>
  int(1)
  ["isError"]=>
  bool(false)
  ["isWarning"]=>
  bool(false)
  ["errors"]=>
  array(0) {
  }
  ["warnings"]=>
  array(0) {
  }
  ["hasErrors"]=>
  bool(false)
  ["hasWarnings"]=>
  bool(false)
  ["message"]=>
  string(7) "Success"
}

RK Chain & Sprocket Kit – 'Steel 520 Quick Acceleration' (Yamaha R7)

Chain & Sprockets / RK-Excel

$292.99

Availability: In Stock

Quantity:

Earn $14.65 in UBD Bucks

Fitment:

IMPORTANT: Please Review Your Owner’s Manual for Exact Amounts or Sizing of This Product!

We ship nationwide!

Questions?
Speak to one of our experts today:
469-490-3577

Brand:

RK-Excel

SKU:

1230-1734

Description:

RK ‘520 Quick Acceleration’ Chain and Sprocket Kit – Gold

Product Overview

The RK 520 Quick Acceleration Chain and Sprocket Kit is built for riders looking to unlock quicker acceleration, sharper throttle response, and a more aggressive feel from the Yamaha R7.

This is a full 520 conversion kit, replacing the stock 525 drivetrain with a lighter, performance-oriented 520 setup. Combined with shorter gearing, this kit transforms how the R7 delivers power—making it feel more responsive, more eager to rev, and significantly stronger in the low-to-midrange.

Key Technology & Design

520 Conversion System (Complete Replacement)

This kit replaces the entire OEM drivetrain with a matched 520 system.

Includes 520 front sprocket, rear sprocket, and chain
Converts from stock 525 to 520 setup
Reduces rotating mass for improved responsiveness

Chain & Sprocket Compatibility

Chain and sprocket sizes must always match.

520 chain must be used with 520 sprockets
525 chain must be used with 525 sprockets
Mixing sizes will cause improper fitment and premature wear
This kit replaces everything to ensure proper compatibility

Premium 520 XW-Ring Sealed Chain

RK’s XW-ring chain is designed for high-performance street riding with strong durability.

520 XW-ring sealed chain construction
Gold finish for premium appearance
Rivet-style master link included
High tensile strength rated at 42 kN / 9,450 lb

Steel Sprocket Construction

Built for durability while still delivering performance gains.

Steel front sprocket for strength
Steel rear sprocket for extended wear life
More durable than aluminum sprockets for street use
Designed to handle aggressive riding conditions

Gearing & Performance

Quick Acceleration Setup

This kit significantly changes the final drive ratio to improve acceleration and responsiveness.

Designed around a 15T front / 44T rear setup
Shorter gearing than stock for stronger acceleration
Faster throttle response and improved roll-on power
Helps the engine get into the powerband quicker
Stronger drive out of corners and low-speed situations

Stock vs This Kit

Stock Yamaha YZF-R7: 16T front / 42T rear — 525 chain
This kit: 15T front / 44T rear — 520 conversion
Smaller front + larger rear = noticeably quicker acceleration
More aggressive gearing across all gears
Engine revs faster and feels more responsive
Transforms the bike’s low and midrange performance

Real-World Feel

Much stronger pull compared to stock gearing
More immediate throttle response
Better acceleration in street and backroad riding
More engaging and aggressive overall feel

Why Switch to 520 Over the Stock 525?

Performance vs Durability Tradeoff

The R7 comes equipped with a 525 chain from the factory for durability and longer service life. A 520 conversion is a common upgrade for performance-focused riders.

520 chain is narrower and lighter than 525
Reduces drivetrain rotating mass
Allows the engine to rev more freely
Improves throttle response and acceleration feel
Common upgrade for sport and track riding

What Actually Makes the Difference

You are not gaining horsepower from reducing chain size alone
The biggest performance gain comes from gearing changes
The 520 setup enhances responsiveness and feel
525 remains better for maximum longevity and heavy use

Why These Kits Are Popular

Riders often replace chain and sprockets together
Combines gearing upgrade + chain conversion in one kit
Performance-focused riders prefer lighter drivetrain setups
Simple, complete upgrade over stock components

Ideal Use

Best For Riders Who Want Maximum Acceleration

Street riding
Aggressive sport riding
Backroad / canyon riding
Riders upgrading from stock gearing for better response

Fitment

2022–Current — Yamaha YZF-R7

Specs

Brand: RK
Chain Type: 520 ZXW
Chain Size: 520
Seal Type: XW-Ring
Chain Length: 110 Links
Master Link Connector Type: Rivet
Tensile Strength: 42 kN / 9,450 lb
Front Sprocket Tooth Count: 15
Rear Sprocket Tooth Count: 44
Material: Steel
Color / Finish: Gold
Riding Style: Street
Units: Kit

Link copied to clipboard!

Related Products

JT Sprockets

43T Steel Rear Sprocket – 530 (Suzuki)

$41.75

Vortex

43T Steel Rear Sprocket – 520 (Honda)

$57.95

Vortex

42T Steel Rear Sprocket – 525 (Honda CBR)

$59.95

Vortex

45T Steel Rear Sprocket – 525 (Yamaha + Suzuki + Kawasaki)

$63.95

Chain & Sprockets