RK
RK CHAIN 420MRU - 136 LINK (U-RING)
Drive ChainsSKU 12-42U-136
Cheapest we found
$87.95
at XPERT Moto Gear
8 recent in-stock prices · spread $11.05 (13%)
Based only on in-stock prices checked in the last 30 days. 8 stores checked; dates for every store are shown below.
Recorded store prices
Prices we recorded when we last checked each store for this exact variant.
Product details
RK - 420MRU-136L Chain Key Features
- MRU chains utilize RK's proprietary Ultra Thin Seal U-Rings which allows the thickness of the seal to be less than 50% of the most common O-ring seal
- MRU features 4 times longer chain life and will require less chain adjustments than comparable non-sealed 420 chains
- Lightweight, low friction, sealed, U-Ring 420 pitch chain perfect for any small bore bike.
Price history
Recorded changes for this exact variant.
Step chart of dated store-price observations. Solid lines show confirmed crawl coverage, dashed lines show overdue missed-check spans, and every line stops at the last confirmed price.
- 1XPERT Moto Gear2 points · last checked 22 Aug 2026
- 2AMA Warehouse1 point · last checked 22 Aug 2026
- 3Excite Motorsports1 point · last checked 22 Aug 2026
- 4Everest Motorcycles3 points · last checked 22 Aug 2026
- 5MotoHeaven4 points · last checked 21 Aug 2026
- 6Bikebiz1 point · last checked 21 Aug 2026
2 more store series are not shown to keep the chart readable.
Solid steps show periods confirmed by the store’s change-only price history and completed crawl record: if the price had changed at a check, another point would appear. Dashed steps show overdue periods with no completed crawl confirmation. Every line stops at that listing’s last confirmed check and is never extended to today. Prices are not live and may have changed since the last point shown.
How we collect and compare prices