PISTON KIT VERTEX 91.0 C KAWASAKI KFX 750 05-14 BIG BORE, VERTEX 23910C OS+6:00 BRUTE FORCE/TERIX COMPR 9:1
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with 
PISTON KIT VERTEX 23910C. Bore size 91.00mm BIG BORE +6.00mm. Compression 9:1. All Vertex Pistons Feature: Standard pistons and components are OEM replacements. Kits include piston, rings, wrist pin and circlips. All pistons are heat treated with a T-5 or T-6 hardening and tempering cycle. Replacement rings are sold individually. Made in Italy. Fitted in many OEM bikes as STD. Replacement parts: Rings 590391000002 SET, Pin 711140, Clips 72075.
- SKU
- 23910C
- Brand
- Vertex
- Availability
- In Stock (2)
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 91mm
- Variant Id
- 282101
FULL DESCRIPTION
Vertex Big Bore Piston Kit 91.0mm Compression 9:1
This Vertex piston kit is designed as a high-performance upgrade, featuring a big bore size and a 9:1 compression ratio. Vertex pistons are manufactured in Italy and are known for their quality and reliability, often fitted as standard equipment on OEM bikes.
Key Features:
- Big Bore Size: 91.00mm bore, a +6.00mm increase over standard specifications.
- Compression Ratio: Engineered for a 9:1 compression ratio.
- Complete Kit: Includes the piston, piston rings, wrist pin, and circlips for a full replacement.
- Heat Treated: All Vertex pistons undergo a T-5 or T-6 hardening and tempering heat cycle for enhanced durability.
- OEM Quality: Standard pistons and components are designed to meet OEM replacement standards.
- Replacement Parts Available: Individual replacement rings, pins, and clips can be sourced separately.
Specifications:
- Bore Size: 91.00mm
- Oversize: +6.00mm
- Compression Ratio: 9:1
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
Call or email us with your make, model and year and we will check it for you before you order.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.