The Best 400ex big bore kit of 2025 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best 400ex big bore kit of 2025. Check our ranking below.
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- Compatible with OEM Part Numbers Honda 12100-HN1-A70, 12191-KCY-672,13011-KCY-670, 90601-KA5-000,13101-KCY-670, 13111-KCY-670,91301-428-003, 12251-HN1-003,12100-KCY-670, 12100-KCY-670, 12191-KCY-672, 13011-KCY-670, 90601-KA5-000, 13101-KCY-670, 13111-KCY-670, 91301-428-003, 12251-HN1-003
- Compatible with Honda 1996-2004 XR400R, 1999-2008 Sportrax TRX400EX, 2009, 2012-2014 TRX400X
- Includes Cylinder (89mm), Piston, Piston Rings, O-Rings (2), Wristpin and Circlips (2)
- Also Includes Base Gasket and Head Gasket
- Cylinder Bore and Stroke 89.00mm x 70.00mm; Cylinder Material Aluminum; Cylinder Sleeve Coating None
- Compatible With: Honda 1999-2008 TRX400EX Sportrax 2009 TRX400X 2012-2014 TRX400X 1999-2004 XR400R
- Content: Cylinder (89mm), Piston, Piston Rings, 2* O-Rings (2), Wristpin and 2* Circlips, Gasket, Spark Plug
- Replace Part Number: 12100-HN1-A70, 12191-KCY-672,13011-KCY-670, 90601-KA5-000, 13101-KCY-670, 13111-KCY-670, 91301-428-003, 12251-HN1-003,12100-KCY-670, 12191-KCY-672
- Feature: We adopt the highest grade materials to make our product. It bring durable and reliable feature under extreme conditions.
- Warranty: For any reason, if you are not satisfied with your purchase, contact us directly. We offer a one-year warranty, 100% satisfaction guarantee.
- Fits: Honda XR400 440 Overbore 1996-04, XR400 (87-88mm bore) 1996-05, TRX400EX (87-88mm bore) 1999-08, TRX400X (87-88mm bore) 2009-12
- Fits: Honda Sportrax TRX400 EX (1999-2008)
- STD Bore 85mm / Displacement 397cc
- This product is tested to Exceed Original Equipment Standards and Performance
- This product includes Piston Kit, Gasket Kit, OE Type Cylinder
- THIS ITEM HAS TO BE INSTALLED BY PROFESSIONAL MECHANICS SPECIALIZED IN ATV AND UTVs
- 2 YEARS XC AND GNCC RACING TESTED
- Piston top has a ceramic coating providing superior heat resistance which will extend the life span of the piston. * this is the best quality kit! equal to or better than OEM
- Purchase includes: 1x cylinder 1x piston. 1x piston pin. 2x circlips. 1x complete set of rings. 1x head gasket. 1x base gasket. 1x head cover gasket. 1x chain tensioner gasket. 1x gasket maker. 1x thread lock. 1x fuel filter. 1x oil filter. 1x free NGK spark plug
- Fits for 1999 - 2008 Honda TRX 400ex.
![50 Caliber Racing 440cc 89mm Big Bore Kit - Fits 1996-2016 Honda XR400R, TRX400X, TRX400EX Models [4449A13]](https://m.media-amazon.com/images/I/41fD4D7LwRL._SL160_.jpg)
- 50 Caliber Racing Big Bore Top End Kit
- Fits Honda XR400R & TRX400ex from 1996 - 2016
- 10:1 Piston with Anodized Dome - 89mm Cylinder - 440cc
- Cylinder - Piston - Rings - Clips - Wrist Pin - Gasket Set - Spark Plug
- Fitment - Top end gasket replacement for Honda Sportrax 400 TRX400EX
- Performance - Good sealing performance, satisfy the application requirement
- Feature - Strict production standards, long use time
- Installation - Direct replacement for a proper and easy installation
- Note - Please compare your original part with our product display pictures, make sure they have the same
- Replacement for Honda Sportrax 400 TRX400EX 1999-2004
- Kit comes complete with head and base gaskets and other necessary gaskets and parts to repair the top end on your motorcycle or ATV
- Gasket with great sealing performance, leakage prevention
- Direct replacement for a proper fit and easy installation, quality materials used
- Please carefully compare the product with your original item, make sure the model fit your need
Last update on 2023-06-14 / Affiliate links / Images from Amazon Product Advertising API
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