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Taking a short break for family time! 🏖️ All orders placed after 6/18 will be processed when we reopen on 6/30. Thank you for your understanding and continued support!

TRX500/520 Foreman and Rubicon IRS

ES Module 420/500/520
ES Module 420/500/520
Regular price $90
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420/500/520 Clutch Springs
420/500/520 Clutch Springs
Regular price $20
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420/500/520 Primary Reduction Footshift/ES
420/500/520 Primary Reduction Footshift/ES
From $600
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420/500/520 Clutch Plate Kit
420/500/520 Clutch Plate Kit
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420/500/520 DCT(Auto+ES) Primary Reduction
420/500/520 DCT(Auto+ES) Primary Reduction
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420/500/520 Install Parts
420/500/520 Install Parts
From $20
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420/500/520 Clutch Freeplay Bolt "Fix"
420/500/520 Clutch Freeplay Bolt "Fix"
Regular price $20
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520 Bolt-on Topend Kit for 420/500
520 Bolt-on Topend Kit for 420/500
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DCT (Auto+ES) 420/500/520 Front Spacer Gasket
Regular price $25
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Modded Rear VSS (speed sensor) 420/500/520
Modded Rear VSS (speed sensor) 420/500/520
Regular price $75
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420/500/520 Secondary Reduction Footshift/ES
420/500/520 Secondary Reduction Footshift/ES
From $350
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Clutch One-Way Bearing
Clutch One-Way Bearing
From $65
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420/500/520 Centrifugal (Starting Clutch) Kits
420/500/520 Centrifugal (Starting Clutch) Kits
From $160
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420/500/520 Billet Clutch Basket
420/500/520 Billet Clutch Basket
Regular price $300
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Wheel Spacer Set 2" 4x110 Fits: 250 300 350 400 450 420 500 520
Wheel Spacer Set 2" 4x110 Fits: 250 300 350 400 450 420 500 520
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420/500/520 Billet Clutch Basket Stock Gear Assembly
420/500/520 Billet Clutch Basket Stock Gear Assembly
Regular price $325
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Contact Us

919-222-3380 M-F 9am-6pm EST

reductionboss@hotmail.com

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Warranty Disclaimer

Every Reduction Boss primary reduction carries a limited lifetime warranty against manufacturing
defects to the original purchaser. Also RBM will cover up to $1,000.00 in parts and labor towards replacing the gear reduction and repairing damage associated with a primary gear set failure. Warranty claims are subject to review and approval by RBM.

Return Policy

We accept returns for items that are damaged or incorrectly packaged within 14 days of delivery, provided they are unused and in their original packaging.

Please double-check your order before placing it. A 10% cancellation fee applies to orders canceled after processing but before shipping. Returned items are subject to a 20% restocking fee.

Thank you for supporting our business!

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