{"id":237223,"date":"2025-11-03T11:51:39","date_gmt":"2025-11-03T11:51:39","guid":{"rendered":"https:\/\/innteck.it\/innteck-usa\/?post_type=product&p=237223"},"modified":"2026-10-06T07:14:04","modified_gmt":"2026-10-06T07:14:04","slug":"vhm-high-compression-cylinder-head-insert-for-kawasaki-kx85-7-80cc","status":"publish","type":"product","link":"https:\/\/innteck.it\/innteck-usa\/product\/motorcycle\/engine\/cylinder-parts\/cylinder-head-inserts\/vhm-high-compression-cylinder-head-insert-for-kawasaki-kx85-7-80cc\/","title":{"rendered":"VHM High-Compression Cylinder Head Insert for Kawasaki KX85 \u2013 7.80cc"},"content":{"rendered":"

The VHM AE32240-C 7.80cc cylinder head insert<\/strong> is an optional high-compression combustion chamber developed for Kawasaki KX85 2-stroke motorcycles equipped with the VHM AA33151 cylinder head.<\/p>\n

Compared with the standard AE32240-E 8.00cc VHM insert<\/strong>, the smaller 7.80cc combustion chamber increases the compression ratio and shifts the engine character toward stronger low- and mid-range torque. This delivers quicker acceleration, more immediate throttle response, and increased drive when exiting corners.<\/p>\n

This torque-focused configuration is especially effective on deep sand tracks and other conditions where strong bottom-end response helps maintain momentum<\/strong>. The trade-off is reduced top-speed and over-rev potential compared with the standard or larger-volume chamber configurations.<\/p>\n

The insert features a 7.80cc combustion chamber volume<\/strong>, +1.70 mm piston height<\/strong>, 0.90 mm squish<\/strong>, a dome piston crown profile<\/strong>, and a \u00d848.50 mm bore<\/strong>.<\/p>\n

VHM\u2019s interchangeable combustion chamber system allows the insert to be changed quickly without replacing the complete cylinder head, making it easier to adapt engine characteristics to different track conditions and performance requirements.<\/p>\n

Because the AE32240-C increases compression, use of high-quality fuel with suitable detonation resistance<\/strong> is recommended.<\/p>\n

The insert is precision-engineered for the VHM AA33151 cylinder head<\/strong> and features an engraved part-number reference for easy identification during servicing and engine tuning.<\/p>\n

This insert is not compatible with the OEM cylinder head and must be used with the VHM AA33151 head.<\/strong><\/p>\n

<\/h3>\n

Key Features<\/h3>\n
    \n
  • 7.80cc high-compression combustion chamber increases low- and mid-range torque<\/strong><\/li>\n
  • Improves acceleration and delivers stronger engine response when exiting corners<\/strong><\/li>\n
  • Ideal for deep sand tracks and traction-demanding motocross conditions<\/strong><\/li>\n
  • Quick-change VHM insert design allows easy adjustment of engine characteristics<\/strong><\/li>\n
  • Designed for use with high-quality fuel to help reduce the risk of detonation<\/strong><\/li>\n<\/ul>\n

    <\/h3>\n

    Technical Specifications<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Specification<\/th>\nDetails<\/th>\n<\/tr>\n
    Manufacturer<\/strong><\/td>\nVHM<\/td>\n<\/tr>\n
    Part Number \/ SKU<\/strong><\/td>\nAE32240-C<\/td>\n<\/tr>\n
    Product Type<\/strong><\/td>\nCylinder Head Insert \/ Combustion Chamber Insert<\/td>\n<\/tr>\n
    Insert Type<\/strong><\/td>\nOptional \/ High-Compression<\/td>\n<\/tr>\n
    Engine Type<\/strong><\/td>\n2-Stroke<\/td>\n<\/tr>\n
    Engine Class<\/strong><\/td>\n85cc<\/td>\n<\/tr>\n
    Combustion Chamber Volume<\/strong><\/td>\n7.80 cc<\/td>\n<\/tr>\n
    Piston Height<\/strong><\/td>\n+1.70 mm<\/td>\n<\/tr>\n
    Squish<\/strong><\/td>\n0.90 mm<\/td>\n<\/tr>\n
    Piston Crown Shape<\/strong><\/td>\nDome<\/td>\n<\/tr>\n
    Bore<\/strong><\/td>\n\u00d848.50 mm<\/td>\n<\/tr>\n
    Power Characteristic<\/strong><\/td>\nIncreased Low- and Mid-Range Torque<\/td>\n<\/tr>\n
    Recommended Use<\/strong><\/td>\nDeep Sand \/ Torque-Focused Setup<\/td>\n<\/tr>\n
    Required Cylinder Head<\/strong><\/td>\nVHM AA33151<\/td>\n<\/tr>\n
    OEM Cylinder Head Compatible<\/strong><\/td>\nNo<\/td>\n<\/tr>\n
    Fuel Recommendation<\/strong><\/td>\nHigh-quality, detonation-resistant fuel<\/td>\n<\/tr>\n
    Identification<\/strong><\/td>\nPart-number reference engraved on insert<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    Optional 7.80cc VHM high-compression cylinder head insert engineered to increase low- and mid-range torque, improve acceleration, and deliver stronger corner-exit drive on Kawasaki KX85 2-stroke engines. Ideal for deep sand and traction-demanding motocross conditions.<\/p>\n","protected":false},"featured_media":237222,"template":"","meta":[],"product_brand":[269],"product_cat":[235],"product_tag":[],"class_list":["post-237223","product","type-product","status-publish","has-post-thumbnail","product_brand-vhm","product_cat-cylinder-head-inserts","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/product\/237223","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/media\/237222"}],"wp:attachment":[{"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/media?parent=237223"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/product_brand?post=237223"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/product_cat?post=237223"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/product_tag?post=237223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}