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FREE SHIPPING on orders over $250 in the contiguous US. "IN-STOCK" reductions ship out next business day! Gear reduction orders come with a free t-shirt, just add your size in the notes when checking out.

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
Regular price $185
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420/500/520 DCT(Auto+ES) Primary Reduction
420/500/520 DCT(Auto+ES) Primary Reduction
From $675
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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"
Sold Out
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520 "Bolt-On" Topend Kit for 420/500
520 "Bolt-On" Topend Kit for 420/500
Regular price $750
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Modded Rear VSS (speed sensor) 420/500/520
Modded Rear VSS (speed sensor) 420/500/520
Sold Out
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DCT (Auto+ES) 420/500/520 Front Spacer Gasket
Regular price $25
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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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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 info

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 within 14 days of delivery. Please double-check your order before placing it. A 10% cancellation fee applies to orders canceled prior to shipping. A 20% restocking fee applies to returned orders.

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