{"id":237257,"date":"2025-11-03T11:52:15","date_gmt":"2025-11-03T11:52:15","guid":{"rendered":"https:\/\/innteck.it\/innteck-usa\/?post_type=product&p=237257"},"modified":"2026-10-06T07:14:05","modified_gmt":"2026-10-06T07:14:05","slug":"vhm-28-50cc-cylinder-head-insert-for-ktm-300-exc-husqvarna-te-300","status":"publish","type":"product","link":"https:\/\/innteck.it\/innteck-usa\/product\/motorcycle\/engine\/cylinder-parts\/cylinder-head-inserts\/vhm-28-50cc-cylinder-head-insert-for-ktm-300-exc-husqvarna-te-300\/","title":{"rendered":"VHM 28.50cc Cylinder Head Insert for KTM 300 EXC & Husqvarna TE 300"},"content":{"rendered":"

The VHM AE32274-F 28.50cc cylinder head insert<\/strong> is designed for selected KTM 300 EXC and Husqvarna TE 300 2-stroke applications using VHM cylinder heads AA33167 and AA33172.<\/p>\n

For the AA33172 TPI platform<\/strong>, VHM specifies AE32274-F as the standard combustion chamber<\/strong>, including KTM 300 EXC TPI and Husqvarna TE 300i applications. VHM lists the chamber at 28.50cc<\/strong>, with 0.00 mm piston height<\/strong> and 1.90 mm squish<\/strong>.<\/p>\n

Compared with the smaller-volume 27.50cc configuration, the larger 28.50cc combustion chamber reduces compression and shifts engine behavior toward better over-rev characteristics and stronger top-end performance<\/strong>. This makes the setup particularly suitable for hard ground, faster enduro terrain, and riding conditions where maintaining rpm is more important than maximum bottom-end response.<\/p>\n

The trade-off of the larger-volume chamber is a softer low-rpm power reaction compared with smaller, higher-compression inserts.<\/p>\n

The AE32274-F features a 28.50cc combustion chamber volume<\/strong>, 0.00 mm piston height<\/strong>, 1.90 mm squish<\/strong>, a flat-top chamber profile<\/strong>, and a \u00d872 mm bore<\/strong>.<\/p>\n

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

The AE32274-F also offers good resistance to detonation<\/strong> and features an engraved part-number reference for easy identification during engine servicing and setup.<\/p>\n

This insert does not fit an OEM cylinder head and must be used with the appropriate VHM cylinder head.<\/strong><\/p>\n

<\/h3>\n

Key Features<\/h3>\n
    \n
  • 28.50cc VHM standard combustion chamber for AA33172-equipped 300 EXC TPI and TE 300i models<\/strong><\/li>\n
  • Larger chamber volume promotes improved over-rev and stronger top-end performance<\/strong><\/li>\n
  • Well suited to hard ground, faster enduro terrain, and high-rpm riding conditions<\/strong><\/li>\n
  • Good resistance to detonation supports consistent performance under demanding use<\/strong><\/li>\n
  • Quick-change VHM insert design allows easy servicing and combustion chamber adjustment<\/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
    Specification<\/th>\nDetails<\/th>\n<\/tr>\n
    Manufacturer<\/strong><\/td>\nVHM<\/td>\n<\/tr>\n
    Part Number \/ SKU<\/strong><\/td>\nAE32274-F<\/td>\n<\/tr>\n
    Product Type<\/strong><\/td>\nCylinder Head Insert \/ Combustion Chamber Insert<\/td>\n<\/tr>\n
    Insert Type<\/strong><\/td>\nVHM Standard on AA33172<\/td>\n<\/tr>\n
    Engine Type<\/strong><\/td>\n2-Stroke<\/td>\n<\/tr>\n
    Engine Class<\/strong><\/td>\n300cc<\/td>\n<\/tr>\n
    Combustion Chamber Volume<\/strong><\/td>\n28.50 cc<\/td>\n<\/tr>\n
    Piston Height<\/strong><\/td>\n0.00 mm<\/td>\n<\/tr>\n
    Squish<\/strong><\/td>\n1.90 mm<\/td>\n<\/tr>\n
    Piston Crown Shape<\/strong><\/td>\nFlat Top<\/td>\n<\/tr>\n
    Bore<\/strong><\/td>\n\u00d872 mm<\/td>\n<\/tr>\n
    Power Characteristic<\/strong><\/td>\nIncreased Over-Rev and Top-End Performance<\/td>\n<\/tr>\n
    Recommended Use<\/strong><\/td>\nHard Ground \/ Enduro \/ Fast Terrain<\/td>\n<\/tr>\n
    Compatible VHM Cylinder Heads<\/strong><\/td>\nAA33167 \/ AA33172<\/td>\n<\/tr>\n
    OEM Cylinder Head Compatible<\/strong><\/td>\nNo<\/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":"

    28.50cc VHM cylinder head insert engineered for strong over-rev, freer high-rpm performance, and increased top-end speed on 300cc 2-stroke enduro engines. VHM standard configuration for 300 EXC TPI and TE 300i models using the AA33172 cylinder head.<\/p>\n","protected":false},"featured_media":237256,"template":"","meta":[],"product_brand":[269],"product_cat":[235],"product_tag":[],"class_list":["post-237257","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\/237257","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\/237256"}],"wp:attachment":[{"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/media?parent=237257"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/product_brand?post=237257"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/product_cat?post=237257"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/innteck.it\/innteck-usa\/wp-json\/wp\/v2\/product_tag?post=237257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}